This reply is mostly good but Hamas has nothing to do with the US controlling both sides in Gaza.

Walling 2 million people into an open-air prison and terrorizing them is enough to make them act like 2 million people being terrorized in an open-air prison.

Walling those 2 million people in is done by funding Israel, not Hamas.

Any funding given to Hamas is just to stir the pot a bit extra, while the flame of the stove (under the stirred pot) is in funding Israel.