sentences:  Its use was continued by the Israeli government on-again-off-again fashion during the al-Aqsa Intifada of the early 21st century, during which more than 3,000 civilian homes have been demolished.Notably, the family homes of a number of Palestinian bombers were targeted in retaliation for terrorist attacks against Israeli targets.However, the usefulness of such tactics has been questioned; in 2005 an Israeli Army commission to study house demolitions found no proof of effective deterrence and concluded that the damage caused by the demolitions outweighed their effectiveness.