The Trump administration's opposition to abortion has led to the watering-down of sexual violence in a UN resolution on ending.
The US removed all references to sexual and reproductive health.
The Security Council resolution submitted by Germany dropped all such references. The US, along with China and Russia, had threatened to veto it.
The trump administration is set up on the grounds that it includes support for abortion.
The amended resolution passed 1
French UN Ambassador Francois Delattre was the author of the decision to exclude the reference to sexual health, saying it was undermined by the dignity of women.
"It is intolerable and incomprehensible that the Security Council is incapable of acknowledging that women and girls who suffered from sexual violence in conflict, and who obviously didn't choose to become pregnant, should have the right to terminate their pregnancy," he said.
The removed phrase read: "Recognizing the importance of providing timely assistance to survivors of sexual violence, urges United Nations entities and donors to provide non-discriminatory and comprehensive health services, in line with Resolution 2106."
This line was thought to be a compromise from an earlier version, which included and more detailed description of the health services, "including sexual and reproductive health, psychosocial, legal, and livelihood support".
This language had been used before in previous resolutions related to sexual violence, US media report.
The new resolution condoms the use of a weapon of war and expresses the Security Council's concern at the slow progress in addressing sexual violence in conflict.
But while it urged improved justice for victims, the final version also removed a reference to a UN monitoring body that would report acts of sexual violence.
The initial resolution had garnered widespread support. Human rights lawyer Amal Clooney attended Tuesday's Security Council meeting and urged members to vote in favor.
"This is your Nuremberg moment," Mrs Clooney said. "Your chance to stand on the right side of history."
Ms Clooney was joined by two 2018 Nobel Peace Prize winners, both anti-rape activists: Congolese gynecologist Denis Mukwege and Nadia Murad, an Iraqi Yazidi who was tortured and raped by Islamic State militants.
German foreign minister Heiko Maas also joined actress and activist Angelina Jolie in writing in the Washington Post on April 22 advocating the resolution
International figures have denounced the US for weakening the resolution.
UK Labor MP Emily Thornberry cited the resolution as cause for concern in light of President Donald Trump's recently announced visit to the UK.
"It beggars belief that on the very same day Donald Trump is threatening to veto United Nations resolution against the use of rape as a weapon of war, Theresa May is pressing ahead with her plans to honor him with a state visit to the UK, "Ms. Thornberry, the opposition's spokesperson on foreign affairs said.
The US was represented by acting ambassador to the US, Jonathan Cohen. The ambassador has been vacant since the resignation of Nikki Haley last year.
Mr Trump nominated Kelly Knight Craft, current US ambassador to Canada, for the job in February.