In his new book, “Dark Forces: The Truth About What Happened in Benghazi” writer Kenneth R. Timmerman explains how the US government’s efforts to arm the Libyan rebels backfired, flooding weapons into Syria. The Obama administration isn’t only giving the Taliban back its commanders — it’s giving them weapons. Miliary records and sources reveal that on July 25, 2012, Taliban fighters in Kunar province successfully targeted a US Army CH-47 helicopter with a new generation Stinger missile. They thought they had a surefire kill. But instead of bursting into flames, the Chinook just disappeared into the darkness as the American...