Bloomberg Ten sailors are missing and five were injured after a US warship collided with a petroleum tanker near Singapore on Monday, the second crash involving an American naval vessel in Asia in a matter of months. Search-and-rescue efforts are underway after the USS John S. McCain collided with the Alnic MC, the US Navy said. The US Seventh Fleet …

Bloomberg Nigerian President Muhammadu Buhari vowed to step up the fight against the extremists and proponents of secession in his first speech after returning from three months of sick leave in London. Nigeria’s national unity is “not negotiable,” Buhari, 74, said Monday in a nationally televised address. “Terrorists and criminals must be fought and destroyed relentlessly so that the majority …

BERLIN / Reuters German Chancellor Angela Merkel criticised Turkey’s use of an Interpol arrest warrant to detain a German writer in Spain, telling an election town hall event on Sunday that this amounted to abuse of the international police agency. Dogan Akhanli was stopped in Spain on Saturday after Ankara issued a “red notice”. The German-Turkish writer was released on …