Secretary of State Rex Tillerson says North Korea's Kim Jong Un is "being tested" by the strongest sanctions ever put in place by the U.S. and the international community.
Tillerson won't say what the U.S. response would be if Kim's government tested a hydrogen bomb in the Pacific Ocean. Tillerson says it would be President Donald Trump's decision, but he adds that all military options remain on the table.
He says Trump's threat to totally destroy North Korea shows the president takes "very seriously" his responsibility to protect Americans.
Tillerson says American diplomatic efforts "continue unabated" to try to bring Kim's government to the negotiating table. He says the U.S. keeps pressing Russia and China to do more to squeeze Pyongyang economically.
