(NewsNation) — Former United Kingdom Prime Minister Boris Johnson says he has “always been confident” that United States President Donald Trump could get the Ukrainians to sign up to “some sensible things.”

On Tuesday, Ukraine agreed to accept a deal for a temporary ceasefire in its war with Russia in exchange for the U.S. resuming intelligence sharing and security assistance.

“I’ve been one of the tiny minority of European commentators, politicians, Turners, to think that actually there was method in the madness of Donald Trump, and that he did have a plan,” Johnson said on “On Balance” Tuesday.

“I’m a believer in the president, Donald Trump’s ability to get things done,” Johnson said. “When I was Foreign Secretary, I saw how he dealt with Ukraine.”

While Johnson said he “may be proved wrong,” he added that “Trump is the kind of President who has the guts to stand up to Putin.”

“I think he’s in a very strong position to exert leverage on the Russians,” Johnson said.