In return, Hamas rains rockets down on Israeli cities including Tel Aviv, Ashkelon and Beersheba.
Hamas was founded by Sheikh Ahmed Yassin, a Palestinian cleric.
Smoke billows from an Israeli air strike on the Hanadi compound in Gaza City, controlled by the Palestinian Hamas movement, on May 11, 2021.
Dozens have died in the most severe outbreak of violence since a 2014 war, with no resolution in sight.
Under longstanding agreements, Jews are permitted to visit the compound, but they are barred from praying.
Health officials in northern Gaza said a woman and her three children were killed during the Israeli operation and that their bodies were recovered from the rubble of their home.