Shaped by past inequality and colonial priorities, the UN has yet to confront the truth about itself, or distance its past from the reality of the present.
Veto highlights the growing divide between Washington and its European allies, as well as Arab countries, who have refused to commit to taking back foreign fighters since allied forces crushed Daesh over a year ago.
Thirteen council members argued on Friday that Washington's move is void given it is using a process agreed upon under a 2015 nuclear deal between Iran and world powers that the US quit two years ago.
The embargo on conventional arms is due to expire in mid-October, as agreed under the 2015 nuclear deal among Iran, Russia, China, Germany, Britain, France and the United States.
Three members of the bloc led by Saudi Arabia continue to enforce an economic and political blockade of Doha.
Secretary of State Pompeo said the United States would call for a Security Council vote next week on a US-drafted resolution to extend the embargo that is due to expire in October.
After Moscow and Beijing wielded vetoes for a second time this week, only three countries joined Russia in backing its proposal to cut the number of aid transit points from two to one.
The US has circulated a draft resolution to the 15-member council that would indefinitely extend the arms embargo on Tehran but Russia and China oppose the move.
"I call upon Israel to abandon its annexation plans," says UN Secretary-General Antonio Guterres, adding that such a move would "threaten efforts to advance regional peace."
"I am directing my administration to begin the process of eliminating policy that gives Hong Kong different and special treatment," Trump said.
Fighting erupted a day after UN envoy Martin Griffiths told the security council warring sides made "significant progress" in agreeing on a ceasefire amid a burgeoning Covid-19 outbreak.
The council halved the number of crossings and length of authorisation to avoid a Russian veto.
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