NEW YORK (CBSNewYork/AP) — Denouncing North Korean leader Kim Jong-un, President Donald Trump told the United Nations General Assembly that “Rocket Man is on a suicide mission for himself.”

“The United States has great strength and patience, but if it is forced to defend itself or its allies, we will have no choice but to totally destroy North Korea,” Trump said Tuesday. “Rocket Man is on a suicide mission for himself and for his regime. The United States is ready, willing, and able, but hopefully this will not be necessary.”

Trump also slammed the Iranian government, calling it an “economically depleted rogue state” whose chief export is violence.

Questioning the 2015 nuclear deal with Iran, Trump said the world cannot allow the “murderous regime” to continue its destabilizing activities while building dangerous missiles. He added world leaders “cannot abide” by the agreement if it “provides cover” for Iran to eventually build its nuclear program.