Trump says damage to Iran's nuclear sites is 'far below ground level'

As Israel and Iran continue to trade aerial strikes, an Iranian operation spokesperson released a stark message to Israel via state TV, saying Iran would continue to strike.

"The thunderous missiles of the IRGC's Aerospace Force will not let you spend a single moment outside your underground shelters," operation spokesperson Brigadier General Iman Tajik said in the message.

"It’s been days since you’ve seen the light of the sun. Rest assured, the sound of red sirens will not stop for a moment," the spokesperson said.

-ABC News' Will Gretsky

President Donald Trump is currently meeting with national security advisers in the Situation Room regarding the ongoing conflict with Israel and Iran, multiple sources confirmed to ABC News.

The meeting on Wednesday comes after Trump earlier in the day said he had not made a decision on the United States' involvement.

-ABC News' Katherine Faulders

Some American diplomats and family members authorized to leave the U.S. Embassy in Israel are now being flown out of the country by the U.S. military, according to two State Department officials familiar with the matter.

"Given the ongoing situation and as part of the Embassy’s authorized departure status, Mission personnel have begun departing Israel through a variety of means,” a State Department spokesperson said.

Those airlifted out today include Chief of Mission personnel, and more military evacuation flights are expected to take place in the coming days, according to one official.

The State Department’s Diplomatic Security Service has also been aiding in the evacuations, helping to liaise with the military and secure the operation, they added.

Inside the State Department, two officials said there have been intensive discussions in recent days about conducting a full evacuation of the U.S. Embassy in Israel; any decision on the matter is expected to be made by the White House.

-ABC News' Shannon Kingston

Senate Republicans largely lined up behind President Donald Trump's handling of the conflict between Iran and Israel and said they trusted Trump's judgment on whether the United States ought to involve itself.

Most Republicans said that they agreed with Trump that Iran cannot have a nuclear weapon.

"Either you want them to have a nuclear weapon, or you don't," Sen. Lindsay Graham, R-S.C., said. "And if you don't, if diplomacy fails, you use force."

"I think this is something on which the entire world can agree: Iran cannot have a nuclear weapon, or the ability to deliver a nuclear warhead, period," Sen. John Kennedy, R-La., said.

"If Israel has a plan which is appropriate to take care of the problem, then we don't need to be there, but we should never take or eliminate options that are available to the president in exercising his authority as the commander-in-chief," Sen. Mike Rounds, R-S.D., said.

Both Republicans and Democrats said they would like Congress to have a role in determining whether the U.S. gets involved in the conflict, but Republicans were much less forceful.

-ABC News' Allison Pecorin