In the US, not only the Trump administration but also previous administrations have supported Israel. If the Democrats take control, they will continue to support Israel. There is clearly a very strong Israel lobby in the US.
Israel, because it is powerful in many ways, reacts very strongly to violence. If the Palestinians were as powerful, we would see the same violence from them. They erected a statue of the murderous Saddam Hussein on their own land. He was a filthy criminal who bombed and poisoned his own people.
I don't know who is right and who is wrong in the Israeli-Palestinian war. When you listen to both sides separately, everyone is right in their own way. But when children are dying, no one is right.