Not long after his call with President Moon, President Trump spoke on the phone with Japanese Prime Minister Shinzo Abe.<br /> According to Abe, they agreed that North Korea must take concrete action to denuclearize, and said they will be monitoring the regime closely.<br />They spoke on the phone Saturday for about 30 minutes.<br />Abe also said Trump briefed him in detail about the conversation with President Moon.<br />The Japanese leader said he also plans to speak with President Moon on Sunday. <br />
