President Trump is slated to meet with South Korean President Moon Jae-in at the White House Tuesday, only weeks ahead of Trump’s proposed meeting with North Korean leader Kim Jong-un. This comes as The New York Times reports President Trump is increasingly nervous about the proposed June 12 summit in Singapore. North Korea is threatening to cancel the meeting, after President Trump’s national security adviser, John Bolton, said the U.S. should use the so-called Libyan model for denuclearization in North Korea. In 2011, the U.S. and other nations attacked Libya, toppling and killing Libyan leader Muammar Gaddafi, eight years after Libya negotiated sanctions relief from the United States in exchange for renouncing its nuclear program.