A subtle diplomat like Talleyrand, Donald Trump is not.

The U.S. president, in his first foray at the U.N. General Assembly, derided North Korean leader Kim Jong Un as a "rocket man ... on a suicide mission" and delivered an unabashed defense of nationalism at the seat of global multilateralism.

But if his speech drew barbs from allies and authoritarian adversaries, it did not deter his dance partners at the premier diplomatic waltz of the year, the 193-member United Nations' annual gathering of world leaders.