Non-archived link because I'm lazy and the BBC is funded by the loicense anyway.
His attempt to surrender global leadership and replace it with a more inward-looking, fortress-like mentality. I don't think it succeeded, but the question is how profound has the damage to America's international reputation been - and that remains to be seen.
War is peace.
There's plenty more stupidity in the article, but that was the bit stood out to me as just being fundamentally wicked.
Trump stood up to China and did enough damage that the chinks were complaining that they couldn't fix him like Clinton, Bush, and Obama. Obama was so accommodating to the noodle niggers that he forced Phillipines to surrender their sovereign territory when they asked for the US to defend them from Xinnie the Pooh.