SLOVIANSK/MOSCOW — On Feb. 12 last year, the same day that a ceasefire ended the worst of the fighting in eastern Ukraine between rebels and government forces, a former rebel fighter seized a chance to turn his inside knowledge of the conflict into hard cash. He traveled to a spot on the Russian-Ukrainian border where he retrieved a cache of weapons hidden there earlier by his comrades in the pro-Russian rebel movement. Four days later, shortly before 6:00 p.m., he... (GunPolicy.org)