Several claims made in this comment run 180 degrees to the contrary of the truth. Marxism is the issue not nationalism. Trump isn't an authoritarian in any shape or form. The Iranians had already abandoned the agreement, so we didn't abandon it they did. NK, Syria, Iran, and Iraq aren't ours to lose nor were they ever going to be.
The division you see is because the intelligent people in this country refuse to bend the knee to the Marxists and their attempted socialist revolution. The communist Left has no chance in America, land of the free and home of the brave. You all should vote with your feet and move to Venezuela where they have already implemented all the socialist policies you all want so badly.