Camp David (U.S.) , Jan 08 (ANI): United States President Donald Trump on Sunday said that he was told that North Korea's willingness to hold official talks with South Korea was a result of his 'tough stance'. President Trump was addressing a news conference at Camp David. Earlier, North Korea agreed to hold talks with South Korea, the first in more than two years, hours after Washington and Seoul delayed a military exercise amid a standoff over Pyongyang's nuclear and missile programs. Trump and North Korean leader Kim Jong Un have exchanged insults ever since Trump took office, with Trump repeatedly calling Kim 'rocket man' for testing nuclear weapons and ballistic missiles. The talks between North Korea and South Korea are expected to cover the Winter Olympics, to be held in South Korea next month, and inter-Korean relations.