The president threatened the "ultimate option," but then didn't seem to know just what that phrase meant.
The U.S. secretary of state said Iran was behind the missile strikes. Saudi officials said they had proof.
GOP Sen. Lindsey Graham incurred Trump's wrath after a tweet about "weakness" over Iran.
“If it’s very clearly a smoking gun, I don’t think you can have something that just goes unanswered," Sen. Thom Tillis (R-N.C.) said Tuesday.
The common belief that Trump will start a conflict on the kingdom's behalf is based on a misunderstanding that a confrontation helps the Saudis.
Ayatollah Ali Khamenei's comments follow reports about a possible meeting between President Donald Trump and his Iranian counterpart, Hassan Rouhani.
"My fellow service members and I, we are not your prostitutes," said the Democratic presidential candidate.
He's changed his tune now as he waits to "hear from the Kingdom" regarding a response to the attack on Saudi oil facilities.
Critics say Trump’s serial dishonesty makes it harder to gather allies to counter Iran’s likely role in an attack on Saudi Arabia.
The president and his administration have expressed a willingness to arrange unconditional talks on many occasions despite Trump's cry that it's "fake news."
The Democratic presidential candidate slammed Trump for assuring Saudi Arabia the U.S. is awaiting its direction following an attack on the kingdom's oil supply.
The announcement came as the U.S. released new evidence to support its allegation that Iran was responsible for the attack on Saudi Arabia's oil sites.
The president tweeted that he's authorized the release of strategic petroleum reserves "if needed" to stabilize energy markets after an attack on Saudi oil sites.
"Iran will not stop their misbehavior until the consequences become more real," the senator said after a drone attack on Saudi oil facilities.
“Americans have to realize that warmongering and warmongers are not to their benefit,” the Iranian president said in televised remarks.
Iran announced it has begun using advanced centrifuges to enrich uranium.
The explosion marked the third failure involving a rocket at the Imam Khomeini Space Center, raising suspicion of sabotage.
A photo that president tweeted to 64 million followers could help U.S. adversaries determine details of U.S. surveillance capabilities, experts warned.
The president said he had an “absolute right” to share an image that experts had expressed concern might include sensitive surveillance information.
Donald Trump had said Monday at the G-7 that there's a "really good chance" that he and Hassan Rouhani could meet to discuss their nuclear impasse.