Former Guantanamo bay detainee Yasir Al-Silmi was killed in a March 2 U.S. airstrike in Yemen, the Pentagon announced Monday. The Pentagon’s statement indicated Silmi was held between 2002-2009 at the prison, but details surrounding his detention are still unclear. Former Guantanamo bay detainee, Abu-Zakariya al-Britani, blew himself up in an ISIS suicide bomb in a…