Hyper presidentialist state that allows one administration (and realistically one person) to start a war against another nation without having authorization from congress.
Actually, I'm in favor parliamentary republic with proportional representation, but words have meanings, and "authoritarian" is impossible to apply to a country with electorally changeable power by definition. Or a one with working separation of powers. And plenty of other attributes present in the US.
Iran, Gaza, Cuba, Irak, Afghanistan, Yemen, Lebanon... These people do not only suffer their tyrannical governments, but they must suffer also the war actions of the US and its allies.
You know that there are regular people living in these terror states that have to suffer not only their terror states but the US? It's not that I feel pity of the terror states, but of the regular people. It's a very easy distinction that for some reason (racism?) people is troubled to make.