Washington, Rajab 5, 1432, Jun 7, 2011, SPA - U.S. Defense Secretary Robert Gates will leave here later today for Brussels on conclusion of a four-day visit to Afghanistan. During the visit, he toured US troop bases in remote parts of southern and eastern Afghanistan. Gates is retiring June 30. In Brussels, he will attend NATO meetings expected to focus on the way ahead in Afghanistan and Libya. --SPA 12:57 LOCAL TIME 09:57 GMT www.spa.gov.sa/900398