A group of UN agencies have called for a humanitarian ceasefire in Gaza as conditions worsen in the territory.
The World Food Programme (WFP) and the World Health Organization (WHO) were among five agencies who described the situation in Gaza as "catastrophic" in a joint statement.
The UN's plea for a de-escalation of the conflict comes as Israel warns of intensified strikes on Gaza.
On Saturday, 20 aid trucks crossed from Egypt for the first time in two weeks.
But campaigners said the aid that flowed through the Rafah crossing represented a "drop in the ocean" of what was needed.
Prior to the war, about 500 aid trucks a day were entering Gaza, said a spokesman from ActionAid Palestine.
A significant proportion of those living in the territory - some 1.2 million people - already relied on aid before the recent conflict erupted, according to the UN.
Israel began retaliatory air strikes on Gaza after an unprecedented assault on 7 October by Hamas's military wing on Israel. About 1,400 people were killed in that attack - many of whom were in their homes near Gaza or at a music festival in southern Israel.
More than 4,300 Palestinians have been killed in the last two weeks in Gaza, according to the Hamas-run health ministry.
Israel is widely expected to launch a ground offensive into the Gaza Strip, but the timing remains unknown. In the meantime, it has put Gaza under siege, cutting off essential supplies.
Saturday's aid delivery included medicines, food, water and coffins, but not fuel.
The UN agencies highlighted that children, pregnant women and the elderly were the most vulnerable - and that nearly half of the population of the Gaza Strip were children.
The UN's Development Programme (UNDP), its Population Fund (UNFPA) and its International Children's Emergency Fund (Unicef) put forward the statement alongside the WFP and the WHO.
As well as calling for a ceasefire, they said "immediate, unrestricted humanitarian access throughout Gaza" was necessary to "allow humanitarian actors to reach civilians in need".
They added that "more than 1.6 million people in Gaza are in critical need of humanitarian aid".
India’s economy will become carbon neutral by the year 2070, the country’s prime minster has announced at the COP26 climate crisis summit in Glasgow. The target date is two decades beyond what scientists say is needed to avert catastrophic climate impacts. India is the last of the world’s major carbon polluters to announce a net-zero target, with China saying it would reach that goal in 2060, and the United States and the European Union aiming for 2050.
China's carbon emissions are vast and growing, dwarfing those of other countries. Experts agree that without big reductions in China's emissions, the world cannot win the fight against climate change. In 2020, China's President Xi Jinping said his country would aim for its emissions to reach their highest point before 2030 and for carbon neutrality before 2060. His statement has now been confirmed as China's official position ahead of the COP26 global climate summit in Glasgow. But China has not said exactly how these goals will be achieved.
China's carbon emissions are vast and growing, dwarfing those of other countries. Experts agree that without big reductions in China's emissions, the world cannot win the fight against climate change. In 2020, China's President Xi Jinping said his country would aim for its emissions to reach their highest point before 2030 and for carbon neutrality before 2060. His statement has now been confirmed as China's official position ahead of the COP26 global climate summit in Glasgow. But China has not said exactly how these goals will be achieved.
A crucial U.N. conference heard calls on its first day for the world's major economies to keep their promises of financial help to address the climate crisis, while big polluters India and Brazil made new commitments to cut emissions. World leaders, environmental experts and activists all pleaded for decisive action to halt the global warming which threatens the future of the planet at the start of the two-week COP26 summit in the Scottish city of Glasgow on Monday. The task facing negotiators was made even more daunting by the failure of the Group of 20 major industrial nations to agree ambitious new commitments at the weekend.