The United States has been discussing with Saudi Arabia and other Gulf allies possible responses to Saturday's attack, which they blame on Iran and which U.S. Secretary of State Mike Pompeo described as an act of war on the kingdom.
United Nations spokesman Farhan Haq acknowledged their arrival in a statement to journalists Thursday.
Late Wednesday, CBS News cited an unnamed U.S. official saying Iran's supreme leader Ayatollah Ali Khamenei had approved the attack, on condition it be carried out in a way that would allow Iran to deny involvement. The UAE is a close ally of Saudi Arabia and joined the kingdom in its war in Yemen against the Houthis.
However, the commander of Iran's Revolutionary Guard, Major General Hossein Salami, said on Thursday that the U.S. was "so powerful that they are forced to falsely accuse us to be behind any incident".
"We have set about a course of action to deny Iran the capacity and the wealth so that they can conduct their terrorist-to prevent them from conducting their terror campaigns", he said.
"The U.S. stands with #SaudiArabia and supports its right to defend itself".
Iraq, which is allied with both Iran and the USA, has tried to keep a neutral stance amid the tensions.
Iran's foreign minister responded by telling CNN that the Islamic Republic "won't blink" if it has to defend itself against any United States or Saudi military strike, which he said would lead to "all-out war". Pence said Trump will "review the facts, and he'll make a decision about next steps".
Asked by CNN what would be the outcome of a USA or Saudi strike, Zarif said: "All-out war".
The Saudi-led coalition said it intercepted and destroyed an explosives-laden boat launched from Yemen by the Iran-aligned Houthi group on Thursday, an incident that could further increase regional tensions after a weekend attack on Saudi oil installations. However, experts told The Associated Press the cruise missiles used in the assault did not have the range to have been launched from Yemen and reach their targets.
Saudi Arabia says missiles and drones that hit oil facilities are Iranian
Asked whether military retaliation was being considered, he said "everything is on the table".
"But given that there is an global investigation let's wait for the results", he said.
"As of this time all indications are that Iran is in some way responsible", spokesman Jonathan Hoffman said, before adding "we're not going to get ahead of the Saudi investigation in their assessment of this". The minister went on to say Iran has nothing to gain from attacking Saudi Arabia and wants stability in the region.
Foreign Minister Jean-Yves Le Drian similarly was skeptical of the Houthi claim of responsibility.
The security officials said the officer who died was the representative of Saudi troops in Hadramawt, Lt. Col. Bandar Murid al-Otaiby.
Iraq's State Organization for the Marketing of Oil (SOMO) denied on Thursday that Saudi Arabia had asked it for crude supplies for its domestic refineries, the Iraqi state news agency reported.
Ryder said the military's goal is "to deter conflict in the Middle East".
There was no immediate confirmation by the Houthi movement, which had claimed responsibility for the September 14 attacks on Saudi oil facilities.
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But he stressed that military retaliation was not yet on the table in response to the strike against a key U.S. Riyadh says Tehran arms the group, which has fired missiles and drones on Saudi cities, a charge both deny.
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