Here is the situation 24.4.7 The Global war: Sep/Oct 1939 ~ Jul/Aug 1945:
Step 1.
Germany DoW's Poland.
9.3 Compulsory declarations
Germany must declare war on Poland in the first impulse of any game that starts in Sep/Oct 1939. No major power may make any other declaration of war in that impulse.
France and the Commonwealth must declare war on Germany on their first impulse after Germany has declared war on Poland. No major power may make any other declarations of war in that impulse.
19.5.1 Eastern Poland
The USSR can exercise its Nazi-Soviet Pact rights to occupy eastern Poland during any Allied land movement step. However, it can only exercise those rights if Poland has not been conquered.
You exercise those rights by moving a land unit into any hex of eastern Poland.
Once you exercise those rights, the part of Poland to the east of the partition line becomes conquered by the Soviets. Move any Axis units there to the nearest Axis controlled hex they can stack in. Any Allied (except Soviet) units there are destroyed. They are removed from the game (internment) until Germany and the USSR are at war, at which point they may be added to the Commonwealth force pool if the Commonwealth player so desires.
Axis units may not cross the partition line after the USSR exercises its rights unless Germany and the USSR are at war.
Anytime after 1941, the Commonwealth can add a randomly chosen Polish MOT and MECH to its force pools if, at that time:
• The USSR has exercised its rights under the pact; and
• Poland has been conquered by the Axis; and
• The USSR and Germany are at war.
All the Polish units covered by this rule are treated as British for all purposes.
20. The Axis declares war on: (if Japan declares war place USA entry chit in the USA (Ja) entry pool else place it in the USA (Ge/It) entry pool)
Poland, Spain, Turkey or any American country (1 USA entry chit and a 20% chance of another will be added to the USA entry pool)
Belgium, Finland, Rumania, Sweden or Switzerland (There is a 80% chance of a USA entry chit will be added to the USA entry pool)
Other minor (There is a 30% chance of a USA entry chit will be added to the USA entry pool)
Step 2.
The USSR occupies eastern Poland.
19.5.1 Eastern Poland
The USSR can exercise its Nazi-Soviet Pact rights to occupy eastern Poland during any Allied land movement step. However, it can only exercise those rights if Poland has not been conquered.
You exercise those rights by moving a land unit into any hex of eastern
26. The USSR controls Eastern Poland (There is a 70% chance a USA entry chit will be removed from the USA (Ge/It) entry pool)
The USSR can exercise its Nazi-Soviet Pact rights to occupy eastern Poland during any Allied land movement step. However, it can only exercise those rights if Poland has not been conquered (see 19.5.1 Eastern Poland).
Step 3.
Poland is conquered.
Step 4.
The USSR claims Bessarabia and the Germans deny the claim. The USSR must DoW Rumania.
19.6 Soviet border rectification
The Soviet Union laid claim to territory held by several of its neighbours. As a result of the Nazi-Soviet partition of Poland, it recovered the land it claimed from that country. Subsequently, with German approval, it absorbed the Baltic States, satisfying further claims. This rule covers its claims over Rumania and Finland.
19.6.2 Rumania
The USSR claims Bessarabia
During any Allied declaration of war step (after the first) while Rumania is neutral, the USSR can claim Bessarabia.
The German player (acting as Rumania) must either allow the claim or deny it.
Rumania denies the claim
If Rumania denies the USSR’s claim, the USSR must immediately declare war on Rumania.
Germany can enforce a peace between Rumania and the USSR during any peace step if:
• no hex of Rumania, outside of Bessarabia, is Soviet controlled; and
• Germany and the USSR are not at war.
If Rumania and the USSR come to peace:
• Rumania again becomes a neutral minor country;
• the USSR keeps control of Bessarabia provided there is a Soviet land unit anywhere in Bessarabia; and
• Germany can declare Rumania, Hungary and Bulgaria aligned with Germany during any later Axis declaration of war steps.
If the USSR conquers Rumania:
• Germany can declare Hungary aligned with Germany during any later Axis declaration of war step; and
• Bulgaria can never align with Germany but the USSR can declare it aligned with the USSR during any later Allied declaration of war step.
While Rumania and the USSR are at war:
• Germany can declare Hungary aligned with Germany during any Axis declaration of war step; and
• Bulgaria cannot align with either Germany or the USSR.
31. The USSR declares war on:
Poland, Spain, Turkey, or any American country (2 USA entry chits and a 50% chance of another will be removed from the USA (Ja) entry pool)
Belgium, Finland, Rumania, Sweden or Switzerland (1 USA entry chit and a 80% chance of another being removed from the USA (Ja) entry pool)
Other minor country or Vichy France (There is a 90% chance of a USA entry chit being removed from the USA (Ge/It) entry pool)
Step 5.
The USSR occupies only Bessarabia. The Germans declare peace between Rumania and the USSR.
Question: Strategically what has the USSR done wrong?