Israel has launched a new wave of airstrikes across the Gaza Strip, striking dozens of Hamas targets in its heaviest assault in the territory since a ceasefire took effect in January.

The Trump administration had been working to extend the ceasefire, which was put on fragile ground after both sides accused the other of violating its terms.

Gaza’s fragile ceasefire shattered early Tuesday as Israel carried out deadly strikes across the enclave and Israeli Prime Minister Benjamin Netanyahu vowed to use “increasing military strength” against Hamas.