As we mark the end of the ninth month of the largest, most brutal war in Europe since 1945, the worst thing we can do for peace on our continent is to push for peace negotiations with Vladimir Putin. The best thing we can do for peace is to increase our military, economic and humanitarian support for Ukraine, until one day it can negotiate from a position of strength. Donald Trump recently hinted that he might be the perfect candidate to practise the art of the deal with Putin. Silvio Berlusconi has also proposed himself as a mediator. What a...