(FILES) UN Secretary-General Antonio Guterres listens during a UN Security Council meeting on the situation in the Middle East, including the Palestinian question, at UN headquarters in New York City on April 18, 2024. Guterres expressed alarm on April 30, 2024, over reports of mass graves discovered in Gaza including at two hospitals and allegations those buried there were unlawfully killed, as he demanded an independent investigation. (Photo by ANGELA WEISS / AFP)