The mother of a slain Palestinian teenager said her son was saving up for a Mother’s Day gift before he was killed by Israeli forces over the weekend. Yamen Jaffal, 16, was shot dead late Sunday in Abu Dis, south of East Jerusalem, after reportedly throwing stones at Israeli soldiers raiding the occupied town. The Israeli army alleged that Yamen Jaffal was “throwing Molotov cocktails” at a military outpost in the occupied West Bank when he was shot. “My son was a very affectionate boy. On the day he died, I dropped him off at school and he asked to kiss my hand but I was shy because it was in …