SEOUL North Korean leader Kim Jong Un would face the end of his regime if he ever used his isolated country's nuclear weapons against the South, Seoul's president said on Tuesday. President Yoon Suk Yeol was speaking at an event to mark the anniversary of the founding of South Korea 's armed forces, with a military parade and fighter jet flyover in central Seoul scheduled for later in the day. "If North Korea attempts to use nuclear weapons, it will face the resolute and overwhelming response