Ukraine's Zelensky Addresses UK Parliament; Russia Threatens to Cut Gas to Germany

Ukrainians are evacuating through the first humanitarian corridor agreed with Russia. But Kyiv is accusing Russian troops of shelling another corridor out of the port city of Mariupol. Defence Secretary Ben Wallace says Putin is not making much in advances after 13 days of war. Ukraine's President Volodymyr Zelensky receives a standing ovation after he gave a historic speech to the Commons via video link. The EU and the United States announce they will phase out Russian oil and gas. It comes as Moscow threatens to switch off the gas tap itself.