President Moon Jae-in also sat down on Monday with U.S. National Security Advisor Robert O'Brien on the sidelines of the ASEAN meetings.<br />Responding to O'Brien's request for advice on negotiations with North Korea,... President Moon stressed the importance of patienc and noted that Seoul, Washington cooperation was key in building a stronger alliance and making progress on the Korean Peninsula peace process.<br />They also exchanged views on Seoul-Tokyo relations among others.<br />O'Brien delivered President Trump's letter of condolence to President Moon,... over the passing of President Moon's mother last week.<br />In the letter, President Trump said she will undoubtedly be proud of her son for his efforts in building peace on the Korean Peninsula.<br />
