Mongolian People's Republic

Why did Chiang Kai-shek sell Outer Mongolia? After Jiang defeated and retired to Taiwan: I am guilty, but I do not think there is any mistake
Outer Mongolia Chiang Kai-shek Soviet_History Taiwan Mongolian People's Republic
01-16
Chiang Kai-shek's only admission to the "guilt" of his time on the mainland after his arrival in Taiwan was severely examined
Chiang Kai-shek Outer Mongolia Taiwan Mongolian People's Republic Sino-Soviet Treaty of Friendship and Alliance Stalin
12-19