The UN's humanitarian agency warns only a "trickle" of aid is getting into Gaza - Israel says 800 trucks are inside Gaza waiting for collection.

News agencies including AFP, AP, BBC and Reuters issued a joint statement about Gaza journalists unable to feed themselves amid deteriorating humanitarian conditions on Thursday.

Some of Israel’s closest allies have stepped up criticism of its restrictions on aid to Gaza, where doctors and aid organizations say people are dying of starvation.

Health authorities say Israeli strikes in Gaza killed at least 21 people. More than half of those killed late Tuesday and early Wednesday reportedly were women and children.

Doctors and aid workers inside Gaza are reporting the highest levels of malnutrition in children they have ever seen as the hunger crisis reportedly continues to worsen.

"Israeli authorities are the sole decision makers on who, how, and how much aid enters the Gaza Strip, and the type of supplies that are allowed in,” Stéphane Dujarric told the 'Post. ' While hundreds of aid trucks are positioned near the Kerem Shalom crossing,

Bareems, two families from opposite ends of Gaza, have criss-crossed the rubble-strewn territory many times during 21 months of war, in search of food and shelter from Israeli attacks. The Bareems, from southern Gaza,