John Bolton, Failure

Can John Bolton be classified as anything but a failure? South Korean President Roh Moo-Hyun refused to talk to him if he came to Korea. When was the last time the president of an ally refused to talk to the US Ambassador to the UN? Bolton's bluster makes the neocons feel good but it does nothing to further US interests abroad. Bolton wants to come to Seoul to yell at the North Koreans. Roh thinks this is a bad idea, further distancing himself from the Bush administration. As I recently said, Roh's policy makes massively more sense than Bush's.

Has John Bolton actually done anything concrete that anyone in the world finds useful?