"This is a very dangerous situation that we're in right now," Ryan said in an interview on Saturday.
The State Department believes the video is evidence that Iran was behind tanker explosions, but some experts argue that the video is not sufficient on its own.
"The video is not enough," Germany's foreign minister said.
The U.S. has accused Iran of using the weapons in Thursday's attacks on two oil tankers in the Gulf of Oman.
"Not only do we have to continue the economic push against them, but we have to be willing, if necessary, to use the military," Representative Adam Kinzinger said.
More than $100 million of weapons have been exported from the U.S. to Saudi Arabia over the past four years.
"The United States' prohibition would not be an obstacle," Ali Khamenei said, though he stressed the Islamic Republic had no desire for a nuclear arsenal.
Two tankers have reportedly been hit by explosions in the Gulf of Oman, with local media reports describing the incident as an "attack."
Though Japanese Prime Minister Abe Shinzo was absent from high-level talks in his own region, he has a vested interest in trying to resolve a heated dispute in the Middle East.
President Donald Trump frequently reminds us that "all options are on the table" in enforcing U.S. policy, could that lead to war in Iran, North Korea, Syria, Ukraine or Venezuela?
President Trump and Iranian leaders insist they don't want war. But with a build-up of military might on both sides and increasing economic pressure from the U.S., tensions remain high
"What hardliners are doing is turning people against people. It's divisive and opens the door to abusive behaviors," one expert told Newsweek.
It is not yet clear whether the country is violating the terms of the Iran deal, known formally as the Joint Comprehensive Plan of Action (JCPOA).
The remark came after the Trump administration deployed additional military forces to the Persian Gulf region.
Iran's leaders are demanding that their European counterparts do more to save the deal.
Congressman Adam Kinzinger's comments came after President Donald Trump said that "there's always a chance" of war with Iran.
"There's a lot of money that historically has flowed from Gulf state individuals to the Trump family fortune," Senator Chris Murphy said, "and that has to be part of the explanation as to why they continue to bend over backwards to try to make the Saudis happy."
“I think it’s incredibly dangerous,” Representative Seth Moulton warned.
President Donald Trump's administration has created a potent anti-Iranian alliance in the Middle East.
“That’s a very serious issue if they continue to do that,” Trump's national security adviser warned.
The image of Movahedi brandishing her white hijab from a stick during protests at the end of 2017 became a rallying call on social media.
The president's national security adviser also suggested Iran is still seeking a nuclear arsenal despite its adherence to the 2015 nuclear deal.
Agents from an organization directly under the control of Ali Khamenei also changed the locks and threatened the church's warden.
Buttigieg argued that “it wouldn’t be the first time” that Trump has “lost control of an international dynamic.”
“Saudi Arabia is a strategic ally but the crown prince was, in my opinion, involved in the murder of Mr. Khashoggi and he’s done a lot of other disruptive things,” the Republican senator explained.
Senator Bob Menendez said he was "disappointed, but not surprised, that the Trump administration has failed once again to prioritize our long-term national security interests or stand up for human rights."
Previous reports suggested the main responsibilities of about 1,500 additional U.S. troops would be "defensive in nature."
President Donald Trump threatened “the official end of Iran” in a tweet days earlier.
“Washington is deliberately provoking Iran,” Russian Foreign Ministry spokesperson Maria Zakharova claimed.