The Palestinian Islamist group has confirmed that the three sons and ‘several’ grandchildren of Hamas’ top leader, Ismail Haniyeh, have been killed in an Israeli airstrike on Wednesday in the Gaza Strip, and the leader accused Israel of acting in “the spirit of revenge and murder.” The Israeli military confirmed carrying out the attack, identifying the three sons as members of the Hamas armed wing. Haniyeh Confirms 3 Sons, Relatives’ DeathIn a statement from Qatar, Haniyeh said that he was grateful to God for the honor he has given him in the deaths of three of his children and a few of his gr…