Israeli actions in Gaza, including strikes on populated areas in which civilians have been killed, bear the hallmarks of atrocities, the agency that co-ordinates UN humanitarian aid said Friday."There is a callous disregard for human life and dignity. The acts of war that we see bear the hallmarks of atrocity crimes," Jens Laerke, spokesperson for the Office for the Co-ordination of Humanitarian Affairs, said in Geneva."Every day we have seen children being killed, aid workers being killed, people being forcibly displaced with no means for their survival," added Laerke.Israeli Prime Minister Benjamin Netanyahu and his former defence minister have been indicted by the International Criminal Court in the Hague, on war crimes charges.Laerke said stocks of food and medical supplies are running out very fast as the Israeli authorities have blocked aid from crossing into the enclave since March 2.The World Food Programme said it has 5,700 tonnes of food stocks left in Gaza, enough to support its operations for two weeks at most.There are also severe shortages of blood supplies to treat the wounded in Gaza, the World Health Organisation said Friday."Everything related to trauma is quickly running short. There are less than 500 blood units available. 4,500 blood packs are needed each month", Rik Peeperkorn from WHO told reporters in Geneva via video link in Jerusalem.More than 50,000 Palestinians have been killed by the Israeli campaign in Gaza, Palestinian officials say.The UN Human Rights Office, meanwhile, Friday accused Israel of violating international law by forcibly displacing Palestinians in Gaza under "mandatory evacuation orders".The Israeli army has issued what the UN described as 10 mandatory evacuation orders, covering large areas across Gaza, since it resumed its war against Hamas on March 18."These evacuations fail to comply with the requirements of international humanitarian law," UN human rights spokesperson Thameen al-Kheetan said in a statement Friday.