President Lee Jae Myung was set to depart Tuesday for Turkey, the first leg of his two-nation trip where he will attend the North Atlantic Treaty Organization (NATO) summit before heading to Mongolia. The presidential aircraft carrying Lee will take off for Ankara, where the leaders of the NATO's 32 member countries, including U.S. President Donald Trump, will gather for the summit from Tuesday to Wednesday. Lee will attend the NATO summit at the invitation of the alliance's Secretary General Mark Rutte. He will also hold a meeting with the NATO chief shortly after arriving in Ankara. Lee will subsequently hold a meeting with representatives of Japan, Australia and New Zealand — the three countries that, together with Korea, make up NATO's Indo-Pacific Four (IP4), according to the presidential office. Later Tuesday, Lee is scheduled to deliver a keynote speech at a defense industry forum on the sidelines of the NATO summit, joining a session titled "Shared Values, Stronger Industrial Base." On Wednesday, Lee is expected to hold a series of bilateral meetings with participating leaders,