U.S. President Joe Biden attended a church service in Washington, D.C., as he offered Israel on Saturday (October 7) "all appropriate means of support" after a deadly attack from Palestinian militant group Hamas and warned "any party hostile to Israel" not to seek advantage.

U.S. and Israeli officials were coordinating about Israel's military needs in the wake of the attack, with a decision expected soon, a senior U.S. official said.

The United States is working with other governments to make sure the crisis does not spread and is contained to Gaza following a deadly Hamas attack in Israel, the official said.

"We want to make sure this is contained in Gaza," the official told reporters.