@BroderJonathan
With Jeff Stein in Washington
DEEP IN Libya’s Sahara Desert, in the sunbaked town of Sabha, a ragtag group of gunmen loyal to one of the country’s two rival militias agreed to show Timothy Michetti their most prized weapons. Michetti, an experienced investigator for a London-based company that tracks the sources of small arms in conflict zones, traveled there on a hunch this past August. Local fighters, he reckoned, might have some of the shoulder-held anti-aircraft missiles that disappeared when rebels ousted Libyan dictator Muammar el-Qaddafi in 2011.