Malaysian Prime Minister Najib Razak (2nd L) and Australian Prime Minister Tony Abbott (C) participate in a briefing on the search for Malaysia Airlines flight MH370 at RAAF Base Pearce near Perth, April 3, 2014. Malaysian police have ruled out involvement of any passengers in the disappearance of a missing jetliner, while Australian officials warned bad weather and a lack of reliable information were impeding efforts to find wreckage from the plane. REUTERS/Jason Reed (AUSTRALIA - Tags: MILITARY TRANSPORT DISASTER POLITICS)