The defense ministers of Japan, the United States and South Korea agreed Friday they will jointly work to ensure U.N. sanctions against North Korea are strictly enforced, including blocking ship-to-ship transfers of goods.Japanese Defense Minister Takeshi Iwaya told reporters that he agreed with U.S. Defense Secretary James Mattis and South Korean Defense Minister Jeong Kyeong Doo that cooperation among their defense authorities is necessary for North Korea's denuclearization.The trilateral meeting came ahead of a possible second summit between U.S. President Donald Trump and North Korean l…READ FULL ARTICLE