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President Donald Trump has embraced his reputation as a dealmaker in foreign affairs and says he’s already made six countries put down their arms during his second term in office. The president made the claim Monday at the White House during a meeting with Ukrainian President Volodymyr Zelensky and leaders from several European nations. Trump also indicated he would be making progress on bringing an end to the war in Ukraine in the coming weeks.

“I’ve done six wars — I’ve ended six wars,” Trump said. “Look, India-Pakistan, we’re talking about big places. You just take a look at some of these wars. You go to Africa and take a look at them.”

The White House has been building up Trump’s record as the “President of Peace” in recent days. The office released a statement earlier this month touting claimed accomplishments in Armenia and Azerbaijan, Cambodia and Thailand, Israel and Iran, Rwanda and the Democratic Republic of the Congo, Egypt and Ethiopia, and Serbia and Kosovo. Administration officials have also emphasized the Abraham Accords, brokered during Trump’s first term, that normalized relations between Israel and several Arab states.

In some of the cases that Trump has highlighted, critics have asked whether the president has offered lasting solutions or has merely relabeled ceasefires as historic peace deals. With the case of Israel and Iran, a truce was declared on a 12-day war in which Iranian forces tried to gain ground in the region and Israeli air power repelled them. But the ceasefire left unaddressed their core grievances and tensions over Iran’s nuclear ambitions.

Trump’s previous efforts in these countries to end conflict also reflect the limits of his deal-making abilities. He failed to stop bloodshed between Israel and Hamas and his first-term summits with North Korean leader Kim Jong Un ended with no breakthrough, leaving Pyongyang with a larger nuclear arsenal than before.

In at least one case, Trump has been able to offer the parties symbolic but concrete breakthroughs. Last week, Armenia and Azerbaijan came to the White House to sign a declaration vowing to recognize the countries’ borders and renounce the use of violence. The two sides also agreed to a U.S.-brokered transportation corridor connecting the two countries, to be known as the “Trump Route for Peace and Prosperity.” Azerbaijani President Ilham Aliyev hailed the deal as “a miracle” in remarks at the White House, though analysts say it has left long-running territorial disputes on the table.

Mixed track record on ending wars

Trump’s track record in Southeast Asia is a case study in how he uses his own economic leverage to apply pressure on the countries fighting to stop the violence. After 38 people were killed in a border clash between Cambodia and Thailand, Trump threatened to pull trade deals with both countries unless they ended the violence. Regional grouping the Association of Southeast Asian Nations (ASEAN) helped nudge them toward a final deal. Cambodian Prime Minister Hun Manet later credited Trump with playing a critical role and nominated him for the Nobel Peace Prize for his “extraordinary statesmanship.”

A similar situation occurred this May when Trump got involved in a flare-up along the border between India and Pakistan. Washington was credited with playing an important role in Pakistan, though India has denied this. The ceasefire remains tenuous, with the decades-long dispute over Kashmir still unresolved and in danger of breaking out into further violence at any time.

Trump has also taken credit for progress between Rwanda and the Democratic Republic of the Congo in Central Africa. The two countries signed a deal to recognize their borders and disarm militias operating there. But one of the most powerful rebel groups, M23, said it would not respect the deal, casting doubt on whether it will prove sustainable. Experts also note that the U.S. has strategic interests in the outcome of the conflict, as the agreement would help consolidate Washington’s influence over the mineral-rich African nation in a geopolitical competition with China.

A similar situation exists with Trump’s claim about Egypt and Ethiopia. The two countries have a decades-long rivalry over an enormous dam project along the Nile River. Trump has offered his own views on compromise, though no enforceable settlement has yet been reached. The White House has also pointed to normalization measures reached between Serbia and Kosovo, first under Trump’s first term and continuing into this one. But the two countries remain at loggerheads over several territorial and political disputes. The two countries held talks last week, but they were largely driven by the European Union.

Trump has a mixed track record in these negotiations. The former president is known for his unconventional diplomacy that eschews detailed briefings and secret negotiations in favor of audacious public statements and personal branding. Critics say that his downsizing of the State Department and the U.S. Agency for International Development has hollowed out America’s foreign policy machine, making it difficult to turn short-term arrangements into lasting solutions.

Others say that Trump’s interventions have at least sometimes proven effective. Celeste Wallander, a former assistant secretary of defense and now senior fellow at the Center for a New American Security, told Politico that Trump had “done it in a professional way, quietly, diplomatically” in the case of India-Pakistan. Wallander noted that the U.S. had been able to “find some common ground between the parties.”

Trump now says he will apply his own formula in ending the war in Ukraine. But whether that means his diplomacy is sustainable in the long term, or simply a series of temporary fixes, remains to be seen.