British Prime Minister David Cameron and U.S. President Barack Obama discussed the situation in Gaza in a phone call on Friday, Downing Street said.
The two leaders "reiterated their support for Israel’s right to take proportionate action to defend itself from the barrage of rocket attacks from Gaza," the press release said.
Another topic that was discussed was the latest talks on Iran's nuclear program, and both Cameron and Obama agreed to "keep up our efforts to negotiate a lasting agreement which gives the world confidence that the nuclear activities of Iran are exclusively for peaceful purposes."
Also on Friday, Obama spoke with Israeli Prime Minister Benjamin Netanyahu and emphasized U.S. support for Israel's military efforts against Hamas.
Speaking to reporters at the White House, Obama said that he underscored U.S. support for Israel's right to defend itself in the call.
Last Friday, several thousand people crowded the streets outside the Israeli Embassy in west London, waving placards that read "Gaza: End the Siege" and "Freedom for Palestine."