Asia's largest annual security forum,... the 17th Asia Security Summit,... is set to begin,... with the official opening on Friday evening in Singapore. <br /> The three-day 'Shangri-La Dialogue',... is a one-point-five track forum,... involving defense ministers, key officials and security experts from some 40 countries. <br />South Korea's defense minister Song Young-moo will hold various bilateral and trilateral talks on the sidelines of the forum,... including talks with his U.S. counterpart James Mattis on Saturday. <br />The South Korean defense minister will also brief the forum on the recent developments in inter-Korean relations in his speech on Saturday,... and call for international cooperation for the North's successful denuclearization. <br />