Oleksandr Merezhko, a Ukrainian MP and chair of the country's parliamentary committee on foreign affairs, says he doesn't have "high expectations" ahead of today's Trump-Putin meeting.

Speaking to BBC World Service's Newsday programme, Merezhko says the summit in Alaska is "already a diplomatic win" for Russian President Vladimir Putin. Trump has brought him "into the limelight", Merezhko says.

"I don't expect any tangible results for the simple reason that Putin doesn't want to stop the war. His goal is to destroy Ukraine, and Trump doesn't seem to be keen to provide sanctions to Russia and those supporting Russia," Merezhko says.

He stresses a point made several times by Ukraine and its European allies, that "the fate of Ukraine should be decided by Ukrainians" and with the "direct participation of our president".

Volodymyr Zelensky was not invited to the talks, although Trump told Fox News yesterday that the Ukrainian president would be contacted if the meeting went well and a second one was in order.

"Maybe they already have come up with some kind of agreement which they may finalise during the summit, Merezhko says, adding: "We don't know anything and [it] creates lots of risks for our security and our future."