Which preposition to use with kmt

against Occurrences 1%

A small communist state began to develop in Kiangsi, in spite of pressure and, later, attacks of the KMT against them.

in Occurrences 1%

When Chiang Kai-shek separated from the KMT in 1927, the main body of the KMT remained in Hankow as the legal government.

Which preposition to use with  kmt