Sir Julian Lewis: It is excellent to see all Front-Bench spokesmen, including the Minister, so united on this question. Does she accept that Putin has made his attitude to the independence of Ukraine – namely, that it should cease to exist as an independent nation – crystal clear, and therefore any enforced treaty to which he is a signatory is utterly and completely worthless?

The Parliamentary Under-Secretary of State for Foreign, Commonwealth and Development Affairs (Catherine West): The right hon. Gentleman makes an important point about the psychology of this conflict. It is why it is so important, particularly in these desperate winter months, that we remain firm. I commend him and others for all their work on the all-party parliamentary group on Ukraine, and all their work on security and intelligence, to provide that important, dedicated cross-party support to Ukraine. In the end, we know that it is for Ukraine to determine its position on its future, its just peace and its vision for its own people, but we will be behind the Ukrainians so that they know we can be relied on.