Amid global outrage over a rising Gaza death toll in 11 weeks of war between Israel and Hamas and a worsening humanitarian crisis in the Palestinian enclave, the US abstained to allow the 15-member council to adopt a resolution drafted by the United Arab Emirates.
The remaining council members voted for the resolution except for Russia which also abstained.
The resolution no longer dilutes Israel's control over all aid deliveries to 2.3 million people in Gaza. Israel monitors the limited aid deliveries to Gaza via the Rafah crossing from Egypt and the Israeli-controlled Kerem Shalom crossing.
Weakening of language on a cessation of hostilities frustrated several council members - including veto power Russia - and Arab and Organization of Islamic Cooperation states, some of which, diplomats said, view it as approval for Israel to further act against Hamas.
The adopted resolution calls for urgent steps to immediately allow safe, unhindered, and expanded humanitarian access and to create the conditions for a sustainable cessation of hostilities. The initial draft had called for an urgent and sustainable cessation of hostilities to allow aid access.
"By signing off on this, the council would essentially be giving the Israeli armed forces complete freedom of movement for further clearing of the Gaza Strip," Russia's UN Ambassador Vassily Nebenzia told the council before the vote.
Russia proposed the draft be amended to revert to the initial text calling for an urgent and sustainable cessation of hostilities. The amendment was vetoed by the United States. It received 10 votes in favor, while four members abstained.
Earlier this month the 193-member UN General Assembly demanded a humanitarian ceasefire, with 153 states voting in favor of the move that had been vetoed by the United States in the Security Council days earlier.
The US and Israel oppose a ceasefire, believing it would only benefit Hamas. Washington instead supports pauses in fighting to protect civilians and free hostages taken by Hamas.
Last month the United States abstained to allow the Security Council to call for urgent and extended humanitarian pauses in fighting for a sufficient number of days to allow aid access. The move came after four unsuccessful attempts to take action.
Washington traditionally shields its ally Israel from UN action and has already twice vetoed Security Council action.
Israel has retaliated against Hamas by bombarding Gaza from the air, imposing a siege and launching a ground offensive. Some 20,000 Palestinians have been killed, according to health officials in Hamas-ruled Gaza.
Most people in Gaza have been driven from their homes and UN officials have warned of a humanitarian catastrophe.
The World Food Program says half of Gaza's population is starving and only 10% of the food required has entered Gaza since October 07.
A key sticking point during negotiations on the resolution adopted on Friday had been an initial proposal for UN Secretary-General Antonio Guterres to establish a mechanism in Gaza to monitor aid from countries not party to the war.
A toned-down compromise was reached to instead ask Guterres to appoint a senior humanitarian and reconstruction coordinator to establish a UN mechanism for accelerating aid to Gaza through states that are not party to the conflict.
The coordinator would also have responsibility for facilitating, coordinating, monitoring, and verifying in Gaza, as appropriate, the humanitarian nature of all the aid.
