Volodymyr Zelensiy is on a rare trip outside his country. He showed up in London on Wednesday and got a hero’s welcome when he spoke with British lawmakers at Parliament and visited the prime minister’s residence at 10 Downing Street. Zelenskiy is there to say thanks to British leaders and the public. He’s also asking for more help for Ukraine. Specifically, he wants fighter planes. The World’s Europe correspondent Orla Barry reports.