A country gentleman, Sir Stafford Cripps ascetic, vegetarian, and a devout Christian with a lucrative career at the bar cut an incongruous figure in British politics of the 1930s. By the time war broke out, his position among Labour's most radical backbenchers had made him an outcast. It was his fortuitous appointment as ambassador to Moscow in 1940 which secured for him a prominent position in the War Cabinet and later on a key role in Attlee's Labour government. His diary, which he meticulously kept while in Moscow, describes the metamorphosis in his political fortune. As significant is the witness he bears to the dramatic turnabouts of the war: the German-Soviet collaboration following the Ribbentrop-Molotov Pact, the perfidious German invasion of Russia on 22 June 1941, and the emergence of the Grand Alliance. The diary offers candid glimpses of diplomatic life in Moscow and of the Kremlin on the eve of the war and reflects the sombre mood in the following months as the Wehrmac