The president of Finland is urging President Trump to impose a deadline on Vladimir Putin of April 20 to agree a ceasefire in Ukraine.

Speaking to Fox News in London following a weekend visit with Trump in Florida, Alexander Stubb praised Trump’s negotiating efforts, saying Trump is “probably the only person in the world who can mediate the peace.”

Stubb said Putin “respects, and in many ways fears, Donald Trump.”

Finland — a neighbor of Russia’s, with a shared border running more than 800 miles — upended decades of neutrality two years ago when it joined NATO, alarmed by the war in Ukraine.

Stubb believes Ukraine should also be allowed to join the military alliance “in the long run” — a position that runs counter to the Trump administration’s.

Stubb sat down for an interview with Fox News after meeting President Trump at Mar-a-Lago. (Alex Hogan/Fox News)

Following talks and a round of golf with Trump in Florida, the Finnish leader said European leaders are heeding American complaints that Europe does not spend enough money on defense, relying instead on the United States.

“Europe needs to take more responsibility for its own security, more responsibility for its own defense,” Stubb said. “I think we’re doing exactly that.”

He described the U.S.-European relationship as “in a transition,” but insisted: “We’re allies.

“Just because ideologically there are differences at times between Europeans and Americans doesn’t mean that we’re going to sever or divorce.”