Also on Sunday, an armed group kidnapped two foreigners working with Doctors Without Borders (MSF) in Yemen’s east, a government source said, as the charity confirmed it had “lost contact” with some staff.“An armed group kidnapped two MSF workers, one a German national and the other Mexican, in Hadramawt,” a Yemeni interior ministry source told Agence France-Presse, adding that a “military campaign” was underway to track down the kidnappers.