The head of US forces in South Korea warned yesterday against raising hopes over North Korea’s peace overture amid a war of words between the United States and the reclusive North over its nuclear and missile programmes.
 In a New Year address, North Korean leader Kim Jong-un said he was open to dialogue with US ally South Korea and could send a delegation to the Winter Olympics to be held in the South in February. 
Kim also warned that he would push ahead with “mass producing” nuclear warheads, pursuing a weapons programme in defiance of UN Security Council sanctions.
In response, Seoul on Tuesday proposed high-level talks at a border village and on Wednesday, the two Koreas reopened a border hotline that had been closed since February 2016. “We must keep our expectations at the appropriate level,” the chief of United States Forces Korea (USFK), Vincent Brooks, was quoted by Yonhap news agency as saying in an address to a university in Seoul. 
US President Donald Trump and North Korean leader Kim Jong-un have exchanged a series of bellicose comments in recent months, raising alarm across the world, with Trump at times dismissing the prospect of a diplomatic solution to a crisis in which North Korea has threatened to destroy the United States, Japan and South Korea.
Trump has mocked Kim as “Little Rocket Man” and again ridiculed him on Twitter this week, raising some eyebrows at home.
“Will someone from his depleted and food starved regime please inform him that I too have a Nuclear Button, but it is a much bigger & more powerful one than his, and my Button works!” he wrote.
The White House on Wednesday defended the tweet, saying, in answer to a question, Americans should be concerned about Kim’s mental fitness, not their president’s. 
US officials have responded coolly to North Korea’s suggestion of talks and the State Department said Pyongyang “might be trying to drive a wedge” between Washington and Seoul.
Brooks, who triples as commander of the South Korea-US Combined Forces Command and the United Nations Command, said the overture was a strategy to divide five countries— the United States, South Korea, China, Japan and Russia — to reach its goal of being accepted as a “nuclear capable” nation, according to the Yonhap report. “We can’t ignore that reality,” he said, adding it was important for the United States and South Korea to maintain an “ironclad and razor sharp” alliance.
USFK and event organisers could not confirm the commander’s remarks.
The five countries and the North were involved in years of on-again-off-again “six-party talks” aimed at resolving the crisis, negotiations which eventually fizzled when the North pulled out. North Korea says its weapons are necessary to counter US aggression. The United States stations 28,500 troops in the South, a legacy of the 1950-53 Korean War.