Subject: Extended Case Green [GRUEN—code for Czechoslovakia.] Estimate of the Situation with Special Consideration of the Enemy.
A. Initial Political Situation:
1. The basic assumption is that France will declare war during the Case Green.
It is presumed that France will only decide upon war if active military assistance by Great Britain is definitely assured.
2. The Soviet Union will probably side immediately with the Western Powers.
3. It is not expected for the moment that other states will intervene against Germany.
The Dutch-Belgian area assumes in this connection much more importance for the prevention of the war in Western Europe than during the World War. This mainly as an advanced base for the air war.
4. The United States of America will immediately support the fight of the Western Powers with strong ideological and economic means.
5. Italy, Nationalistic-Spain, Hungary and Japan are regarded as benevolent neutrals.
B. Initial Military Situation: