Ukraine's previous president says he knows how to win over Trump
Poroshenko insists that Ukraine's negotiations with Russia and dealings with the U.S. must include opposition voices like his, or risks become incomplete.
Ukraine is weak without unity,' says opposition leader Petro Poroshenko
"You should be prepared for that, when the future of your nation depends on the way you treat Trump," Poroshenko advises, emphasizing the need to understand Trump's negotiating style.