North Korea says it has tested a new hypersonic system designed to strengthen its nuclear deterrent. The tests came just days before U.S. President Donald Trump and China�s Xi Jinping are set to meet in South Korea. Seoul�s military said multiple missiles were fired from near Pyongyang, flying about 350 km before landing on land. The tests mark North Korea�s first since South Korea�s new president, Lee Jae Myung, took office, pledging peace � an offer Kim Jong Un has so far rejected.