A Warning From Europe is a bit of read as it meanders to its point but the destination is well worth the trip. Besides, I like essays and articles that most see as tl;dr. Anyway, single-party oligarchies are waxing worldwide. The author discusses Poland and Hungary specifically but the parallels to the United States are alluded to and make for a great jumping off point.
Also interesting to me the degree to which Hungary resembles a Russian vassal state and that it has also come up frequently as a nexus for Putin/Trump communications.