Japan’s Asahi Shimbun is reporting that US President Donald Trump probably won’t visit the demilitarized zone (DMZ) when he visits South Korea in early November due to security concerns raised by a stream of insults he’s exchanged with leader Kim Jong-un.

Trump is scheduled to hold a bilateral summit in Seoul with South Korean President Moon Jae-in on November 7.

The Japanese newspaper cites a “source” familiar with bilateral relations as saying that US and South Korean officials are worried that Trump might become a target if he visits the heavily fortified area that divides the two nations during his trip.

A stop at the DMZ was included in the initial draft itinerary for Trump’s visit on November 7-8 but is not unlikely to occur, the source says.

Trump, among other things, has called Kim a “Little Rocket Man,” in a recent verbal slugfest, while Kim fired back in a September 21 statement by calling Trump a “gangster fond of playing with fire.”

Asahi noted that criticism of Supreme Leader Kim is considered the most serious taboo in North Korea.

A defector from North Korea who was once a member of the Workers’ Party of Korea was quoted as saying, “Anyone who ignores criticism of the supreme leader will find their own position in danger.”