An Israeli airstrike aimed at a militant squad in southern Gaza killed two Palestinian youths on Tuesday, and a militant was shot and killed in the West Bank when he tried to elude arrest. Palestinian medical officials said the two killed in Gaza were brothers, ages 15 and 17. An Israeli military spokesman said the target was a squad that had fired a mortar shell 20 minutes earlier. The armed wing of Hamas said it fired eight mortar shells at Israeli forces on Tuesday. An Israeli force also killed a militant in the West Bank city of Nablus when he tried to escape arrest, the Israeli military said. Palestinians said the militant, 27, belonged to Al Aksa Martyrs Brigades. The Israeli military said he was involved in a recent attempt at a terrorist attack in Israel.