New details are emerging about the attack that left four U.S. soldiers dead in Niger as U.S. congressional leaders are demanding answers from the Pentagon. The U.S. Green Berets (special forces), along with four Nigerian soldiers, were killed on October 4 in an ambush in Tongo-Tongo, a village near the border with Mali. On the eve of the attack, about 30 Special Forces, mostly Nigeriens and eight U.S. Green Berets, set off in pickup trucks toward the border village and arrived at night, according to Almou Hassane, mayor of Tongo-Tongo, in the Tondikiwindi district. #160; ?They must have spent the night in the northwest of Tongo-Tongo,? Mayor...