By Victoria Bryan and Tim Hepher BERLIN/PARIS (Reuters) - Airlines rushed on Thursday to change their rules so as to require a second crew member in the cockpit at all times, hours after French prosecutors suggested a co-pilot who barricaded himself alone at the controls of a jetliner had crashed it on purpose. The United States already requires two crew members to be in the cabin at all times, but many other countries do not, allowing pilots to leave the flight deck, for example to use the toilet, as long as one pilot is at the controls. Airlines including Norwegian Air Shuttle , Britain's easyJet , Air Canada , Air New Zealand and Air Berlin all said within hours that they had introduced a requirement that two crew members be in the cockpit at all times. Among the companies that did not announce such a policy change was Germanwings parent Lufthansa , whose CEO Carsten Spohr said he believed it was unnecessary.
By James Pearson and Jack Kim SEOUL (Reuters) - South Korea demanded on Friday the immediate release of two of its citizens that North Korea said it had arrested, accusing them of spying for the South. Late on Thursday, the North's official KCNA news agency showed images of two middle-aged men it identified as Kim Kuk Gi and Choe Chun Gil speaking at a news conference in the North Korean capital, Pyongyang. It said the two men were South Korean nationals working as spies for Seoul's National Intelligence Service from the Chinese border city of Dandong. "They zealously took part in the anti-DPRK smear campaign of the U.S. imperialists and the puppet group of traitors to isolate and blockade the DPRK in (the) international arena," the agency said, using North Korea's official DPRK acronym for Democratic People's Republic of Korea.