A family member of a passenger onboard Malaysia Airlines Flight MH370 cries as other relatives shout slogans to protest against the lack of new information after a routine briefing given by Malaysia's government and military representatives at Lido Hotel in Beijing March 22, 2014. Two weeks after a Malaysia Airlines airliner went missing with 239 people on board, officials are bracing for the "long haul" as searches by more than two dozen countries turn up little but frustration and fresh questions. [Photo/Agencies]

Special: Malaysian Airlines jet missing