In an agreement signed Tuesday in Singapore, North Korean leader Kim Jong Un "reaffirmed his firm and unwavering commitment to complete denuclearization of the Korean Peninsula," while U.S. President Donald Trump "committed to provide security guarantees" to North Korea. VOA contributor Greta Van Susteren spoke with the President after the summit. Stepping back to take a broader look at the agreement reached in Singapore between US President Donald Trump and North Korean leader Kim Jong Un, Lisa Collins, fellow with the Korea Chair at the Center for Strategic and International Studies, spoke to VOA. Plus, The Boring Company, based in California, is close to opening its first exciting venture - a 3.2 kilometer underground tunnel designed to convince Californians that traveling underground at high speed may solve their state's ubiquitous traffic jams. It is the brainchild of Elon Musk, the U.S. billionaire who founded the electric car company Tesla and the rocket company SpaceX.