Henry Kissinger is said to have asked: “When I want to speak to Europe, who do I call?”It’s a good question to pose now, with the leaders of Germany and France at the forefront of diplomatic efforts to halt the bloodshed in Ukraine.And where is Britain in all of this? As the Ukraine crisis unfolded last year, it was noticeable that the French, German and Polish foreign ministers were taking the lead. And yet the UK is one of the three signatories to the 1994 Budapest Memorandum on Security Assurances, in which Ukraine agreed to give up its nuclear arsenal (the third largest in the world at the time) in return for guarantees on territorial integrity. The UK’s absence from the table on Ukraine has come in for a stinging rebuke by General Richard Shirreff, who was unt