After a night of heavy airstrikes, the Israeli military said on Tuesday its expanded operation in Gaza City “to destroy Hamas infrastructure” has begun and warned residents to move south. Also on Tuesday, US Secretary of State Marco Rubio left Israel and arrived in the energy-rich nation of Qatar, where he planned to meet with its ruling emir as the nation is still incensed over Israel’s strike last week that killed five Hamas members and a local security official.

While Arab and Muslim nations denounced the strike at a summit Monday, they stopped short of any major action targeting Israel, highlighting the challenge of diplomatically pressuring any change in Israel’s conduct in the grinding Israel-Hamas war.