1. Senate Majority Leader Mitch McConnell walks to classified briefing on Iran
2. House Speaker Nancy Pelosi walks to briefing
3. Senate Minority Leader Chuck Schumer walks into briefing
4. Sen. Dick Durbin walks through senate office building
5. SOUNDBITE: (English) Sen. Dick Durbin, (D) Illinois:
"Unfortunately the only briefing that they're promising is next week. I'm hoping it's not too late, literally. I don't know if someone in the White House is waiting for a Gulf of Tonkin moment here to initiate military action against Iran. That would be a serious mistake and under our Constitution this president has to seek the authority to do that from Congress. That's a reminder that the Constitution was written so that no president is unaccountable. Accountability should be through the American people. It would be a serious mistake, first, to withdraw from the treaty that stopped the development of nuclear weapons in Iran and then to see the situation escalate to the point where this president is even considering military action."
6. Sen. Lindsey Graham walks through hall
7. Reporter asks Graham question in basement of senate office building on UK decision to increase alert level in Iraq
8. SOUNDBITE: (English) Sen. Lindsey Graham, (R) South Carolina:
"Well, number one I'm a United States senator in charge of foreign assistance, State Department funding. I'm in charge of making sure that they're adequately secured in Iraq and other places. I have not been briefed about why we withdrew people from the consulate and the embassy. That's disappointing and unacceptable. So I'm not going to comment on something I don't know about and I will tell the administration, you should pick up the phone you call members of Congress so that we don't have a microphone put in our face, ask us about why you're doing something when we have no clue."
9. Sens. Mark Warner and Richard Burr walk into classified briefing on Iran
10. SOUNDBITE: (English) Sen. Richard Blumenthal, (D) Connecticut:
"The confusion coming from our allies simply shows the need for the White House and the Pentagon to brief Congress and to come clean with the American people. The American people have been kept in the dark. It is disgraceful and despicable that we're on the verge of war and the American people are given this kind of confused and chaotic picture of what the situation is on the ground. We are supposedly going to have a briefing on Tuesday. We're hearing it may be too late because hostilities may have begun or there may be an escalation of the military situation. That is absolutely petrifying. It should be frightening for the American people."
Congressional leaders are receiving a classified briefing on Iran as members of both parties demand more information on the White House's claims of rising threats in the Middle East.
The briefing Thursday with the so-called Gang of Eight comes after Democratic lawmakers warned President Donald Trump against war with Iran.
Republicans and Democrats criticized the White House for not keeping Congress informed of the rising threat in the Middle East.
Trump pulled the U.S. out of the Iran nuclear deal last year and has reimposed sanctions on Tehran that are crippling its economy.
U.S. officials are reporting heightened threats in the region from Iran and have sent military assets there to protect U.S. troops and the interests of both America and its allies.
State Department officials said threats in the region were credible and based on intelligence showing Iranian-backed militias had been moving personnel and weaponry as well as stepping up surveillance of U.S. and U.S.-affiliated facilities in Iraq and other parts of the Middle East.
The officials were not authorized to comment publicly by name and spoke only on condition of anonymity.
Sky News is reporting that the U.K. has raised the threat level for British personnel in Iraq because of a heightened risk from Iran.
Sen. Lindsey Graham, when asked by the change in the threat level expressed his frustration about not having received a briefing yet on the issue.
"I'm not going to comment on something I don't know about and I will tell the administration, you should pick up the phone you call members of Congress so that we don't have a microphone put in our face, ask us about why you're doing something when we have no clue," said Graham.
The full Senate is expected to receive a classified briefing on Iran on Tuesday