After two years of diplomacy, the U.S. and North Korea are back at it again with a volley of fresh verbal attacks.
Although neither side seems to be using fresh material.
At the NATO summit in London on Tuesday (December 3), President Donald Trump said this about Supreme Leader Kim Jong Un: (SOUNDBITE) (English) U.S. PRESIDENT DONALD TRUMP, SAYING: "He definitely likes sending rockets up, doesn't he?
That's why I call him 'Rocket Man'" Trump first called Kim 'Rocket Man' back in 2017 during a war of words that made global news headlines.
North Korea on Thursday (December 5) responded by pulling out a classic: a top diplomat called Trump a "dotard" - that's someone who is old and weak.
The official warned the U.S. president not to call Kim 'Rocket Man' again.
In a statement released on state media, she said, "If any language or expressions stoking an atmosphere of confrontation are used again on purpose at such a crucial moment, it must be diagnosed as the relapse of a dotard back into senility." She seemed to be referring to the first time Trump was thus insulted, by Kim himself in 2017.
Since then, the two leaders have met face to face on several occasions, and even shown some camaraderie.
But relations are starting to look frosty once again.
The U.S. wants the North to scrap its nuclear and ballistic missile programs while the North is demanding the U.S. drop punishing sanctions, continuing, in the meantime, to test its own weapon systems. Kim has warned that the U.S. has until the end of the year to offer more concessions, or he could take a "new path": a threat that analysts told Reuters may mean a return to testing nuclear weapons.