The United States on Thursday announced more Hamas-related sanctions, as it targets sham charity initiatives that bulge the militia's coffers on the one-year mark of the group's brutal surprise attack on Israel.

The United States on Monday imposed sanctions on an international Hamas fundraising network, accusing it of playing a critical role in external fundraising for the Palestinian militant group, in action marking the first anniversary of the Gaza war.

In the past year in the Gaza Strip, Israel has bombed more than 40,000 targets, found 4,700 tunnel shafts and destroyed 1,000 rocket launcher sites, the military said on Monday's one-year anniversary of the Hamas-led militant attacks that triggered Israel's assault on the enclave.