A six-week-old infant and three other children have died of starvation in Gaza in the past 24 hours, local health officials said, with malnutrition and starvation now killing Palestinians faster than at any point in the 21-month war.

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

The World Health Organization say that their staff residence in Deir al Balah, Gaza, has been attacked three times by the IDF after Israeli military entered the premises.

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

The U.S. ambassador to Israel, Mike Huckabee, called the joint statement issued by a host of U.S. allies "disgusting."

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 UN agency says Israel's ground offensive in Deir al-Balah has compromised its efforts to continue working.