Republican primary front-runner Donald Trump says North Korean communist dictator Kim Jong-un deserves "credit" for the cutthroat efficiency with which he disposes of his political foes. "If you look at North Korea, this guy, he's like a maniac, OK?" Trump said at a rally in Ottumwa, Iowa, on Saturday. "And you've got to give him credit: How many young guys - he was like 26 or 25 when his father died - take over these tough generals and all of a sudden, you know, it's pretty amazing when you think of it. How does he do that?" he added. “Even...