The council is set to vote on Monday on renewing sanctions on Yemen for a year, but a British-drafted text also calls for "additional measures" in response to a UN report which found that Iran had violated the arms embargo on Yemen.
![Ana Estrada suffered from polymyositis, an incurable disease that weakens muscles [Elias Alfageme/GDA via AP]](data:image/svg+xml;charset=utf8,%3Csvg%20xmlns%3D'http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg'%20width%3D'100'%20height%3D'100'%20data-ring-placeholder%3D'1'%3E%3C%2Fsvg%3E "Ana Estrada suffered from polymyositis, an incurable disease that weakens muscles [Elias Alfageme/GDA via AP]")
The rival Russian-drafted text presented to the council on Saturday and seen by AFP would extend the sanctions regime on Yemen until February 2019 without any reference to the UN report's findings on Iran and possible action targeting Tehran.
Diplomats said Russia could veto the British text, allowing for a vote on its own draft resolution.
Negotiations were continuing on Sunday.
The report by a UN panel of experts concluded that Iran was in violation of the 2015 arms embargo after determining that missiles fired by the Huthis at Saudi Arabia last year were made in Iran.
Russia maintains that the report's findings are not conclusive enough to justify action against Iran.
Britain, backed by the United States and France, had initially sought to condemn Iran, but that was dropped in negotiations.
The last draft resolution expresses "particular concern" that "weapons of Iranian origin were introduced in Yemen after the imposition of the targeted arms embargo" and that Iran is in "non-compliance" with UN resolutions.
The council would express "its intention to take additional measures to address these violations," according to the British-drafted text.
It adds that "any activity related to the use of ballistic missiles in Yemen" meets the criteria for imposing UN sanctions.
Russia-US clash on Iran
Iran has repeatedly denied arming the Huthis in Yemen, despite claims by the United States and Saudi Arabia that the evidence of an arms connection is irrefutable.
Russia, which has traditionally friendly relations with Iran, is providing military support along with Tehran to Syrian President Bashar al-Assad.
Russian Ambassador Vassily Nebenzia on Wednesday said the draft resolution should focus on renewing the mandate of sanctions monitors for Yemen instead of taking aim at Iran.
"It's a resolution about the extension of the working group, not about Iran. So we should concentrate on extending the working group first," he said.
While the report found that Tehran had violated the embargo by failing to block the shipments, the experts said they were unable to identify the supplier.
US Ambassador Nikki Haley is pushing for council action to rein in Iran and prevent the war in Yemen from escalating into a broader regional conflict.
In a New York Times editorial last week, Haley wrote that "the UN panel has given the world a chance to act before a missile hits a school or a hospital and leads to a dangerous military escalation that provokes a Saudi military response."
A Saudi-led coalition supporting Yemen's government has been fighting the Huthis since 2015 in a conflict that has led to what the United Nations describes as the world's worst humanitarian crisis.
Russia can block council action by using the veto power it enjoys as one of the five permanent Security Council members, along with Britain, China, France and the United States.
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