金门炮战
In July 1958, in Beijing, Khrushchev and Mao were negotiating joint Sino-Soviet naval bases in China, from which nuclear-armed Soviet submarines would deter US intervention in East Asia. The agreement failed when Mao accused Khrushchev of trying to establish Soviet control of the PRC's coast. At the end of August, Mao sought the PRC's sovereignty upon Taiwan by attacking the Matsu islands and Kinmen island that resulted in the Second Taiwan Strait Crisis.