A foreign policy expert says it's not clear if Donald Trump can deliver peace in Ukraine.

The US President's hosted talks on ending the conflict with UK and European leaders, including Ukrainian President Volodymyr Zelenskyy.

Trump says he's working on holding two-and three-way talks with Russia and Ukraine. 

But American University's Gordon Adams says Trump doesn't have an actual strategy. 

"Hang on to your seatbelt if you want to know what's coming next, because the changeability of this particular President is rampant. Which means tomorrow, it could be a different approach altogether."

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