In 1939 Britain and France guarantee Poland's independence as a response to the German occupation of Czechoslovakia. Adolf Hitler's military strategists predict that Germany would not win a war with Britain and France due to the likelihood of American involvement. German diplomats meet with Soviet diplomats and rediscuss the Non-Aggression Pact, in the end agreeing that the Soviet Union would still restrict its invasion to its part of the partition even though Germany had abandoned plans to invade the part of Poland it had been partitioned. Germany still makes secret plans with the Slovak Republic, a client state of Germany to invade Poland.