The October 7 attacks were a series of coordinated armed incursions from the blockaded Gaza Strip into the Gaza envelope of southern Israel, carried out by Hamas and several other Palestinian militant groups in 2023, during the Jewish holiday of Simchat Torah. The attacks, which began the ongoing Gaza war, were the first large-scale invasion of Israeli territory since the 1948 Arab–Israeli War. In response, Israel launched a large-scale military operation in Gaza.