What might have been

A few responses to contributors on the Dunkirk matter. 'Stan' argues: 'Germany would still have invaded Norway, Denmark and France and the low countries whether we promised to defend Poland or not. The invasion of France would have required our entry into the war, but even if we tried to keep out of it we could not have committed any more of the RN, RAF or army to protect our Far East interests in case we left ourselves defenceless against invasion by Germany - so Singapore et al would have...