Stop trolling.
Check out background of that event if you're interested.
https://link.springer.com/chapter/10...-349-24124-8_4
Russia's involvement in the Czechoslovakian crisis of 1938 stemmed from two sources. Firstly, the USSR's commitment to collective resistance against Nazi aggression and expansionism - a policy which Litvinov had affirmed time and time again in public statements in 1936-7.1 Secondly, there was the Soviet-Czechoslovak mutual assistance treaty of 1935 under which the Soviet Union pledged military aid to Czechoslovakia in the event of an attack on that country by a third party. Soviet assistance was, however, conditional upon France, which also had a mutual assistance treaty with Czechoslovakia, simultaneously fulfilling its aid obligations - a clause inserted in the Soviet-Czechoslovak treaty of 1935 at the suggestion of Benesl , the Czech President.
The story of the Soviet role in the events leading to the Munich 'betrayal' of Czechoslovakia in September 1938 is a simple one. From the beginning to the end of the crisis the Soviets campaigned for international resistance to Hitler's designs on Czechoslovakia, urged the Czechs to stand firm, made it crystal clear that they would fulfil their mutual assistance obligations, and agitated for France to do the same.