The U.S. had sanctions on Cuba because of its operations in countries like Bolivia, and not against other repressive Communist nations, so sanctions against North Korea because of its terrorist acts and other aggressions are consistent.
I do not think it was llikely for the attack to have been mounted from North Korean soil. But there are people sympathetic to North Korea in Japan who could do this, and who do other things for North Korea, like buying computers for them.
I do not think it was llikely for the attack to have been mounted from North Korean soil. But there are people sympathetic to North Korea in Japan who could do this, and who do other things for North Korea, like buying computers for them.