Britain's Prime Minister David Cameron (R) walks beside Indonesia Foreign Minister Marty Natalegawa (L) upon his arrival at Halim Perdana Kusuma airport in Jakarta April 11, 2012. Cameron is in Indonesia as part of his tour to Japan and Southeast Asia, accompanied by a delegation of 35 business representatives from defence, energy, construction and other industries. REUTERS/Beawiharta (INDONESIA - Tags: POLITICS)