It may be that Trump forgot, but it’s far more likely that he never knew or never cared about the policy that became a foundation for international stability for the past 80 years. It’s not as if such things matter much to Trump when he’s got outcomes to accomplish to create the appearance of success, no matter what the cost.
Threats to run for a third term notwithstanding, Mr. Trump is a lame-duck president, which makes him more prone to take rash actions on the international stage. As his own threats to take over Canada, Greenland and the Panama Canal suggest, he is sympathetic to the idea of big countries taking over smaller ones, and he is behaving far more erratically in the realm of foreign affairs than he did in his first term. That he might become the first American president to confer legitimacy on the annexation of another country’s territory is a real, and terrifying, possibility.
