BENGHAZI, Libya (AP) — Hundreds of Libyans converged Saturday on a main square in Benghazi and another in Tripoli in response to a call from the military to hand over their weapons, some driving in with armored personnel carriers, tanks, vehicles with mounted anti-aircraft guns and hundreds of rocket launchers. The call by the Libyan chiefs of staff was promoted on a private TV station in August. But it may have gained traction in the wake of the attack against the U.S. consulate in Benghazi in which the American ambassador and three staffers were killed. The incident was followed by...