One expert said the search was like looking for "a needle in the sea". Above, the Vietnamese Air Force joins the effort. Photo: Reuters
A mystery at 35,000ft: What caused Malaysia Airlines flight to vanish into thin air?
Some experts claim a complete loss of contact suggests an explosion aboard flight MH370. Others say such a theory is 'almost impossible'
One expert said the search was like looking for "a needle in the sea". Above, the Vietnamese Air Force joins the effort. Photo: Reuters