This article originally appeared in the Ukrainian journal Novoye Vremya.

President Volodymyr Zelenskyy may meet President Donald Trump this weekend in Warsaw and is expected to travel to the United States later in the fall.  This gives Mr. Zelenskyy the opportunity to reinforce Kyiv’s relationship with the United States.  It also offers the opportunity to try to establish a connection to Mr. Trump, something that has proven elusive for most foreign leaders.  Here are a few suggestions for Mr. Zelenskyy on dealing with the American president.

Mr. Zelenskyy should bear in mind that Mr. Trump lacks a strong grasp of the U.S. interest in and what is at stake with regard to Ukraine and the conflict that Russia wages against it.  His administration has pursued sensible policies in supporting Kyiv, strengthening NATO and sustaining sanctions on Moscow.  By all appearances, however, Mr. Trump does not instinctively agree with the necessity of his administration’s own policies.  Witness his recent suggestion about inviting Vladimir Putin to join with other G7 leaders when he hosts the G7 summit next year.

Mr. Trump is not detail-oriented.  He reportedly reads little, leading White House staff to resort to graphs and pictures to capture his attention.  The smart way to approach Mr. Trump is to avoid detail, sticking instead with a few clear and easily understood themes.

Flattering the American president would not hurt.  North Korean leader Kim Jong-un appears to have mastered that.  North Korea has reduced none of its nuclear or ballistic missile capabilities—in fact, they have increased—but Mr. Trump swoons over Mr. Kim’s letters and professes not to be bothered by Pyongyang’s shorter range ballistic missile tests.

That said, keep expectations for flattery modest.  No European leader invested more heavily in flattering Mr. Trump than former British Prime Minister Theresa May.  She gave him a state visit in June with all the bells and whistles.  Yet Mr. Trump could not resist sending a series of tweets denigrating her handling of the Brexit conundrum and all but welcoming her replacement.

This underscores the point that, in many foreign policy relationships, Mr. Trump is transactional.  He will be asking what can America get, or what can he get.

Mr. Zelenskyy thus should consider whether there is a topic on which he could offer Mr. Trump a win-win.  Progress toward resolving the Russia-Ukraine conflict in Donbas could provide such an issue.  Real movement toward peace would be a major win for Kyiv, but it could offer Mr. Trump a win as well.  He has repeatedly made clear his desire for improved U.S.-Russia relations, and a genuine settlement in Donbas could lift the biggest obstacle to his goal.

The question is how to shape a proposal to accomplish this.  Bringing Mr. Trump into the current Normandy negotiating format in a way that made it appear as if Mr. Trump sparked a breakthrough would appeal to the Nobel Prize-hungry American president.

However, the key to peace in Donbas lies in Moscow.  The Kremlin seems interested in sustaining a simmering conflict as a means to pressure the government in Kyiv.  Still, aligning interests with Mr. Trump on pressing for peace would be a plus for Mr. Zelenskyy.

While in the United States, the Ukrainian president should not neglect the Congressional leadership.  Both Democrats and Republicans on Capitol Hill support Ukraine and display considerable skepticism toward Russia.  Congress could serve as a check on Mr. Trump should he choose to pursue his less well-thought-out ideas on Russia.

Mr. Zelenskyy’s American interlocutors in Congress want Ukraine to succeed, with success measured by its progress in becoming a normal democratic, market-oriented and prosperous European state.  In the past, developments in Ukraine have disappointed both Ukrainians and the country’s friends in the West.  To the extent that Mr. Zelenskyy can make a persuasive case that this time it is different—that he and the new parliament will take the tough steps to achieve success—he will return home having forged a stronger basis for the U.S.-Ukrainian relationship.  He can bolster his case by coming to Washington with one or two signature reforms under his belt, such as an end to the moratorium on sales of private agricultural land.

One last piece of advice.  Mr. Zelenskyy and his team should be wary of former New York mayor Rudy Giuliani’s efforts to drag Ukraine into U.S. domestic politics.  That would risk making Ukraine a partisan political issue in America, which could undermine the bipartisan support that Ukraine has enjoyed since regaining independence in 1991.

* * * * *

Steven Pifer is a William Perry fellow at Stanford University and a former U.S. ambassador to Ukraine.

This article originally appeared at Brookings.

April 5 marks the 10th anniversary of the speech in which Barack Obama laid out his vision for a world without nuclear weapons. It did not gain traction. Instead, the United States and Russia are developing new nuclear capabilities, while the nuclear arms control regime is on course to expire in 2021. The result will be a world that is less stable, less secure, and less predictable.

A WORTHWHILE VISION

Just 10 weeks after his inauguration, President Obama’s first trip to Europe took him to Prague. Speaking in Hradcany Square, Obama voiced his deep interest in reducing nuclear arms, including a “commitment to seek the peace and security of a world without nuclear weapons.” He added that reaching that goal would require time, and that, as long as nuclear arms existed, the United States would maintain a “safe, secure and effective” nuclear arsenal.

Obama’s critics mocked him as naïve and idealistic. Achieving a world without nuclear arms would require, at a minimum, that nations conclude that they could protect their vital interests without nuclear arms; that new and very intrusive verification mechanisms were developed and agreed; and that an enforcement mechanism against any cheating state have real teeth—daunting challenges, to be sure. That said, a world in which nuclear arms were reliably and verifiably eliminated would be very much in the U.S. interest.

Nuclear war today poses the one existential threat to the United States. In a non-nuclear world, America would enjoy the advantages of geography (the protection afforded by two wide oceans and friendly neighbors in Canada and Mexico), the world’s most powerful conventional forces, and an unrivaled network of allies. Deterrence would not end; U.S. conventional forces could threaten enormous costs to any would-be adversary menacing America or its allies.

A big problem arises, however, in trying to persuade other states to accept a non-nuclear world. The balance of advantages and disadvantages that would make such a world so attractive for the United States would seem very different to other countries, such as Russia.

EVENTS TOOK A DIFFERENT COURSE

In any event, matters took a different course than Obama had hoped. Following signature of the New Strategic Arms Reduction Treaty (New START) in April 2010, he called for negotiations with Russia to further reduce strategic nuclear weapons and bring in non-strategic nuclear weapons. That raised the possibility that, for the first time ever, the two countries might negotiate limits on their entire nuclear arsenals.

Moscow chose not to engage in further bilateral negotiations—in part because Washington proved unready to discuss limits on missile defense or conventional strike systems. The Russians also sought a multilateral negotiation, though they have never offered a proposal or explained how one treaty could limit forces as disparate as those of the United States and Russia (4000 to 4500 nuclear weapons each) and China and France (less than 300 each). A Washington Naval Treaty-type agreement assigning unequal limits to its adherents presumably would be unwelcome in Beijing, Paris, and other capitals. 

Today, Russia and the United States have launched major nuclear force modernization programs. These programs focus largely on replacing old systems. Weapons systems age out and need replacement. Both sides, however, also plan to add new capabilities, including exotic strategic weapons and low-yield nuclear arms. One likely and unfortunate result: The threshold for employment of nuclear weapons will be lower.

While U.S. and Russian nuclear modernization proceeds, the regime that limits U.S. and Russian nuclear arms has begun to break down. Russia violated the 1987 Intermediate-range Nuclear Forces (INF) Treaty by deploying a prohibited cruise missile. Neither the Obama nor the Trump administration came up with an effective strategy to bring Moscow back into compliance, and it appears that President Trump barely tried, perhaps reflecting the influence of National Security Advisor John Bolton, who has long expressed skepticism about any agreements that constrain U.S. military forces. The INF Treaty will expire this August when the United States withdraws.

The end of the INF Treaty will leave New START, which caps the sides’ strategic missiles and bombers as well as their deployed strategic warheads, as the sole remaining nuclear arms control agreement. Unlike the INF Treaty, both sides have complied with New START’s limits, but it has less than two years to run before it expires.

New START’s terms allow for an extension of up to five years. Moscow historically has wanted some bounds on U.S. strategic forces. The Russians broached the idea of extension in early 2017 and have raised it several times since then. Extension should be a no-brainer for Washington: It would cap Russian strategic forces until 2026 while forcing no change in U.S. modernization plans, since the Pentagon designed those plans to fit within New START. Extension would also continue the flow of information that the United States receives about Russian strategic forces from New START’s verification measures. Unfortunately, Trump’s grasp of these questions appears weak, and Bolton does not appear a fan of New START.

AN UNCERTAIN FUTURE

The two nuclear superpowers thus will likely find themselves in 2021 in a situation that they have not faced for decades—a world with no constraints on nuclear force numbers. For the United States, that world will prove less stable and less secure as new nuclear capabilities undermine the strategic balance and threaten America. It will prove less predictable, as the data exchanges, notifications, and on-site inspections provided by New START cease. And it will almost certainly prove more costly, as the Pentagon has to make worst-case assumptions.

True, achieving Obama’s vision of a world without nuclear weapons now seems unrealistic. But we could use some presidential commitment to controlling those weapons.

This piece originally appeared at Brookings.

The Trump administration has finished off the 1987 Intermediate-range Nuclear Forces (INF) Treaty, a treaty mortally wounded by Russia’s deployment of a banned intermediate-range missile. That leaves the 2010 New Strategic Arms Reduction Treaty (New START) as the sole agreement limiting U.S. and Russian nuclear forces.

New START has less than two years to run. At the February 15-16 Munich Security Conference, a senior Russian official reiterated Moscow’s readiness to extend the treaty. The administration, however, continues its odd reluctance to take up that offer. House Democrats should use their power of the purse on the issue.

WHY EXTENSION MAKES SENSE

Signed in 2010, New START limits the United States and Russia each to no more than 700 strategic ballistic missiles and bombers, and no more than 1,550 deployed strategic warheads. Those limits took full effect in February 2018. Both sides have complied, although technical questions have arisen. Russian officials question the way in which the U.S. military converted some launchers so that they would not count.

By its terms, New START runs until February 5, 2021. It can be extended for up to five years by simple agreement between the U.S. and Russian presidents.

When asked about extension in 2017, administration officials said they would wait to complete the nuclear posture review and to see if the Russians met the New START limits. Both of those boxes were checked more than a year ago. Administration officials now say they are studying extension but see no need to rush.

New START extension is in the U.S. interest.

First, extension would constrain Russian strategic nuclear forces until 2026. It makes little sense to let the treaty lapse in 2021, when Russia has hot production lines churning out new missiles, submarines, and bombers.

Second, New START extension would not impact U.S. strategic modernization plans. They are sized to fit within New START’s limits. Moreover, the United States will not start producing significant numbers of replacement missiles, submarines, and bombers until the second half of the 2020s.

Third, extension would continue the flow of information that the sides share with each other about their strategic forces. That comes from data exchanges, notifications, on-site inspections and other verification measures, all of which end if New START lapses. Making up for that loss of information would require a costly investment in new national technical means such as reconnaissance satellites.

WHY WE SHOULD WORRY

Extension should be a no-brainer. However, in a White House that operates on its own facts and at times with an indecipherable logic, extension is not a given.

President Trump does not seem to understand much about nuclear arms control. During his first telephone conversation with President Putin, Trump reportedly dismissed New START as a bad deal done by his predecessor. He has taken delight in undoing the accomplishments of President Obama (witness the Iran nuclear accord).

National Security Advisor Bolton shows disdain for arms control and has criticized New START. One of its faults, according to Mr. Bolton: It provides for equal limits on the United States and Russia. He felt the treaty should allow the U.S. military to have more. (U.S. diplomats would have had an interesting time trying to negotiate that.) Asked about New START extension, Mr. Bolton notes two alternatives: renegotiation and a new treaty modeled on the 2002 Strategic Offensive Reductions Treaty (SORT).

Renegotiation would allow U.S. officials to try to improve New START, perhaps with more intrusive verification measures, or even broadening the agreement to cover non-strategic nuclear weapons. Moscow, however, would seek changes as well, such as constraints on missile defenses—anathema to Washington.

Renegotiation would prove difficult, take considerable time, and have at best uncertain prospects for success. A wiser course would extend New START and then seek a renegotiation or a new follow-on treaty.

As for SORT, negotiated by Mr. Bolton, it limited deployed warheads only. Mr. Putin accepted that in 2002, but Russian officials have long since made clear that limits should apply to warheads and delivery vehicles, as they do in New START.

SORT, moreover, was “sort of” arms control. Lacking agreed definitions, counting rules or monitoring measures, it was unverifiable. In doing their own counts on the honor system, the U.S. and Russian militaries may not have even counted the same things.

Neither Secretary of State Pompeo nor Acting Secretary of Defense Patrick Shanahan has shown interest in championing New START. The uniformed military leadership argued the treaty’s value in the past, but Chairman of the Joint Chiefs Joseph Dunford recently has hedged.

While ratification of a treaty requires consent from two-thirds of the Senate, the president alone can decide to leave a treaty. The Trump administration did not consult with either Congress or allies on withdrawal before Trump announced his intention to pull out of the treaty last October.

HOUSE DEMOCRATS TO THE RESCUE?

While the Trump administration shows little interest in arms control, it does want funding to modernize U.S. strategic forces. Democrats should recognize that and force the White House’s hand.

The U.S. strategic triad is aging. Ballistic missile submarines are the leg of the triad most in need of urgent replacement. They should be funded. Replacing intercontinental ballistic missiles (ICBMs) or building the B-21 bomber, however, are less urgent needs. As they work on the appropriations for the 2020 defense budget, House Democrats should make clear to the White House and the Pentagon that money for ICBM modernization or the B-21 would need to be paired with extension of New START. That will get attention.

Retaining a strategic triad makes sense (though the need for 400 deployed ICBMs is debatable). Retaining New START makes sense as well. House Democrats should simply insist on a trade.