Telegram from WSC to Major-General Sir Claude Auchinleck [Commander-in-Chief, Middle East] advising that he will support Air Chief Marshal Sir Arthur Tedder [Air Officer Commanding-in-Chief, Middle East] and Auchinleck should commence attack; proceed to Tripoli [Libya] if possible; Soviets are holding Moscow [Soviet Union] and "winter is near. This is the moment for us to strike hard"; includes envelope.