The US commitment to South Korea has increased the risks of military bases in South Korea, Japan, Guam, and potentially even the US mainland becoming targets for North Korean missile strikes, including nuclear weapons. Former President Joe Biden was a strong supporter of intervention, while former President Trump's approach is more cautious due to the risk of a nuclear strike on US territory. It remains unclear what concessions, such as further trade or base costs agreements, could alleviate Mr. Trump's concerns about engaging in conflict with North Korea.