I am considering this in the context of 1930's history.
Pretends to be a pacifist while buying time to strengthen the national economy to fight a big war everyone knows is inevitable because everyone wants it.
FDR is also a great model for Trump to understand the political levers to crush both an unelected and disloyal deep state and legitimate opposition.
However, may I also recommend you read a history book that doesn't bracket the world wars?