The North said it had no choice but to call off the performance set for February 4, which was to be held in the North Korean territory of Mount Kumgang, as South Korean media continued to insult what Pyongyang called "sincere" measures regarding the Winter Olympics Seoul will host next month, the ministry said.
Mrs May said: "We agree that its pursuit of nuclear and ballistic missile programmes is illegal, reckless and poses an unacceptable threat to global security". But his focus was on the "depraved character" of the North Korean regime and the United States' "campaign of maximum pressure" against Pyongyang.
The North Korean nuclear crisis has placed a premium on the ability of sanctions to avert war, and the past two years have seen an important increase in US and global sanctions against Pyongyang.
The Financial Times reported that Cha was asked if he was "prepared to help manage the evacuation of American citizens from South Korea", which would be necessary in the event of an American bombing. By banning foreign press, North Korea controls all of the imagery the world sees.
The president sharply criticized the regime in his first State of the Union speech before Congress, but avoided the bellicose rhetoric he has wielded in the past.
In November, North Korea said it had successfully tested a new type of ICBM that could reach all of the US mainland and South Korea and USA -based experts said data from the test appeared to support that.
Analysts said he may have been trying to avoid stoking tensions as the North has agreed to participate in next month's Olympics. This, he said, will "inspire other rogue actors who want to undermine the US -backed postwar order".
Born in the communist country in the 1980s, Ji escaped to South Korea in 2006 - a feat made even harder because he had lost his left foot and hand. He was later tortured by the North Korean regime after he crossed the border into China to look for food.
In the audience was the family of the late Otto Warmbier, an American college student who died last year after returning from an over year-long captivity in North Korea.
Trump and top advisers have publicly welcomed the talks but US officials have said privately that Pyongyang might be trying to drive a wedge between allies Washington and Seoul.
Trump has famously traded insults with North Korea's Kim Jong Un, although he has also claimed to have a "very good relationship" with the dictator.
So, if you're skeptical of this move from North Korea and Kim Jung Un, just take a step back, have a drink, and enjoy the Olympics.
Trump prefaced his acknowledgement of Warmbier with the diplomatic threat North Korea poses to the United States. "I will not repeat the mistakes of past administrations that got us into this risky position".