Hamas said on Friday it was reviewing a U.S. proposal to restore the Gaza ceasefire as Israel intensified a military onslaught to press the Palestinian militant group to free remaining Israeli hostages.

The White House said Israel consulted with it before launching widespread airstrikes on Gaza that killed at least 400 on Tuesday.

The United States told the U.N. Security Council on Friday that the Palestinian militant group Hamas was to blame for the deaths in the Gaza Strip since Israel resumed hostilities there. "Hamas bears full responsibility for the ongoing war in Gaza and for the resumption of hostilities.

More than 200 Palestinians were killed in overnight Israeli strikes on the Gaza Strip, the Hamas-ruled enclave's Ministry of Health said, as Hamas accused Israel of violating a fragile ceasefire deal.

Hours later, Hamas fired three rockets at Israel without causing casualties, in the first such attack since Israel broke the ceasefire on Tuesday. Zaher al-Waheidi, the head of the records department at the Gaza Health Ministry,

Israeli artillery and airstrikes hit south Lebanon on Saturday after Israel said it had intercepted rockets fired from across the border, endangering a shaky truce that ended a year-long war between Israel and Lebanese armed group Hezbollah.

Israel said it was striking dozens of targets in Lebanon on Saturday after three rockets were launched across the border in an exchange of fire that threatened a fragile truce between Israel and the Hizbollah militant group.

The ceasefire between Israel and Hamas seems to be breaking down as Hamas launched rockets at Israel, which previously launched a series of airstrikes in Gaza. Retired Gen. Philip Breedlove joins “Elizabeth Vargas Reports” to talk about the latest developments and what they means for negotiations over the remaining Hamas hostages.