Israeli airstrikes attacked numerous locations in the Gaza Strip on Friday, killing a number of individuals, including a top leader of a Palestinian militant organization, in the bloodiest escalation of fighting in the area since an 11-day war last year.The attacks targeted civilian homes as well as militant watchtowers, killing at least 10 people, including a 5-year-old child, and wounding 55 others, the Gaza health ministry said. One airstrike...