WASHINGTON — Congress approved a $225 million package to replenish Israel’s missile defenses with its last order of business before a five-week recess, as the Jewish state’s cease-fire with Hamas unraveled and Israeli forces pushed deep into Gaza in search of a missing army officer.

The House’s 395-8 vote in favor late Friday followed Senate adoption of the legislation by voice vote earlier in the day. The money is directed toward restocking Israel’s Iron Dome, which has been credited with shooting down dozens of incoming rockets fired by Palestinian militants over 3½ weeks of war. The bill now goes to President Barack Obama for his signature.

At a White House news conference earlier Friday, the president reiterated his support for Israel’s right to self-defense while urging greater protection for Palestinian civilians. Obama called for the immediate release of the soldier believed to be captured by Hamas and said it would be hard to put together another cease-fire after a 72-hour humanitarian truce collapsed almost immediately after going into effect Friday. He also cited Iron Dome as a concrete way the U.S. is helping to make sure Israel is able to protect its citizens.

Iron Dome uses radar, advanced tracking technology and anti-missile batteries to follow the trajectory of an incoming rocket or mortar and determine if it is headed for a major population center. If an urban area is threatened, interceptors are fired to detonate in the air in proximity to the missile. Projectiles not posing a threat are allowed to fall in empty fields.