All options are on the table if Israel does not deliver on its pledges to facilitate humanitarian aid in Gaza, the European Union's top diplomat said on Tuesday.

The World Health Organization says Israel's ground offensive has compromised its efforts to continue working, after its facilities were attacked.

The foreign ministers of 25 Western nations have slammed Israel for “drip feeding” aid into the Gaza Strip, as the health ministry in the territory said that more than 1,000 people have been killed seeking humanitarian relief there since late May.

The head of the U.N. Palestinian Refugee Agency said on Tuesday that its staff, as well as doctors and humanitarian workers, were fainting on duty in Gaza due to hunger and exhaustion.

The UK foreign secretary also criticises Israel's rejection of an international statement calling for the war to end.

Israeli soldiers shot Palestinians near an Israeli-backed aid site and a U.N. convoy. Both episodes pointed to Israel’s refusal to allow new governance structures to emerge.

President Donald Trump was caught by surprise last week by Israeli actions in Gaza and Syria, and in both instances phoned Prime Minister Benjamin Netanyahu to “rectify” the matter, according to the White House.

Israeli tank shelling killed at least 12 Palestinians and wounded dozens others in a tent encampment in western Gaza City north of the enclave, local health authorities said early on Tuesday.