The United States struck three nuclear sites in Iran on Saturday, plunging the U.S. into a battle waged over the past several days between Israel and Iran.

Lawmakers expressed surprise after the President Trump announced the U.S. had attacked three Iranian nuclear sites.

In the wake of President Donald Trump's "massive precision strikes" on Iran, concerns have been raised both for Americans in the region and at home.

A U.S. attack on Iran's key underground nuclear facility would not be a guaranteed success, according to a national security expert.

He said Friday it would give time for Iranians to "come to their senses."

President Donald Trump addresses the nation from the White House.

James Acton, co-director of the Nuclear Policy Program, discusses the problems U.S. and Israel will have in ending Iran’s nuclear program.

President Trump said he wanted his legacy to be that of a "peacemaker and a unifier." Six months into his term, conflicts are raging on three fronts.

President Donald Trump addressed the nation after the United States struck three nuclear sites in Iran on Saturday.

Lawmakers expressed surprise after the President Trump announced the U.S. had attacked three Iranian nuclear sites.

President Donald Trump announced on social media Saturday night that the U.S. attacked three nuclear sites in Iran, "including Fordow, Natanz, and Esfahan."

Known as the Joint Comprehensive Plan of Action, or JCPOA, the deal followed two years of negotiations during the Obama administration.

Sources have told ABC News that former White House adviser and podcaster Steve Bannon is playing a role in President Donald Trump’s decision to attack Iran.

MAGA star Steve Bannon plays outsized role in Trump's Iran decision: Sources

The president, along with his national security team, is weighing the decision over whether to strike Iran or not.

Donald Trump says his two-week window will let Iranians "come to their senses."

Retired four-star Army Gen. Robert Abrams reacts to the two-week deadline set by President Donald Trump to decide on a possible Iran strike.

President Trump, taking reporter questions after arriving in New Jersey on Friday afternoon, was asked for the calculus behind his two-week timeline to make a decision on whether to strike Iran.

President Donald Trump's consideration of bringing the United States into Israel's conflict with Iran has reignited tensions inside the Republican Party and Trump's base.

President Trump has asked an appeals court to delay arguments scheduled for next week in his appeal of the $83 million defamation case brought by E. Jean Carroll.

Some 4,000 National Guardsmen and 700 Marines were ordered to the Los Angeles area following protests over immigration raids.

European leaders are meeting with Iranian diplomats in Geneva on Friday, attempting to reach a diplomatic resolution that would prevent Iran from developing its nuclear weapons program.

President Donald Trump will decide whether the U.S. should strike Iran within two weeks, due to a “substantial chance of negotiations that may or may not take place with Iran in the near future.”

For a third day, Pres. Trump met with his national security team as he weighs possible U.S. direct action in Iran.

President Donald Trump announced he signed an executive order Thursday extending the deadline for TikTok's ban.

Aerial attacks between Israel and Iran continued overnight into Thursday, marking a seventh day of strikes following Israel's Friday attack.

As the legal battle between the Trump administration and Harvard heats up, here's a look at what Harvard calls Trump's "campaign of retaliation" against the school.

Taxpayers will not be paying for President Trump's ongoing appeal of the $83 million defamation case brought by E. Jean Carroll, an appeals court has ruled.

White House press secretary Karoline Leavitt, at the top of her briefing on Thursday, shared a message from President Trump regarding the Israel-Iran conflict.

President Donald Trump faces growing pressure at home and abroad as he weighs his options on whether to get the U.S. involved in the conflict between Israel and Iran.

The president's comments came as workers erected two 88-foot-tall flagpoles, one on the North Lawn and one on the South Lawn, at the White House on Wednesday.

President Donald Trump -- clearly frustrated by the failure of his diplomatic efforts to date -- has raised the prospect of entirely abandoning American engagement.

President Donald Trump has overseen the installation of a massive new flagpole on the South Lawn of the White House

For the second day in a row, Pres. Trump has gathered his national security team in the Situation Room as he decides if the U.S. should strike Iran.

Senate Republicans largely lined up behind President Donald Trump's handling of the conflict between Iran and Israel, and said they trust the president’s judgment.

ByteDance, the Chinese owner of the social media app, has been granted another 90 days to find an American owner.

Trump told top advisers he approved possible attack plans but has not yet given the order to carry out the strike.

President Donald Trump has not made any final decision on the United States' involvement and has yet to decide whether to give a final order, sources tell ABC News.

When asked if he gave Iran an ultimatum, President Donald Trump said he gave Iran the "ultimate ultimatum," but he would not share what the ultimatum was.

A growing division among President Donald Trump's MAGA base has formed as the Israel-Iran conflict continues.

Steve Bannon said it's a mistake for the U.S. to get involved in direct military action against Iran -- urging Trump to question Israeli intel and Netanyahu's warnings.

President Donald Trump posted on social media that the U.S. knows where Iran’s Supreme Leader Ayatollah Ali Khamenei is hiding and demanded the regime's "unconditional surrender."

President Donald Trump criticized Federal Reserve Chairman Jerome Powell as he spoke with reporters outside the White House on Wednesday morning.

U.S. officials signaled Tuesday that the next 24 to 48 hours would be critical.

In the Situation Room, Pres. Trump met with his national security team for over an hour amid questions about what the U.S. will do.

President Donald Trump's meeting with advisers in the Situation Room was underway on Tuesday afternoon, a White House official confirmed, as Israel and Iran continue to trade strikes.

Vance defends Trump after supporters like Tucker Carlson and those in the MAGA base's calls to stay out of the Israel-Iran conflict.

President Donald Trump wrote a threatening post on his social media platform saying the U.S. knows where Iran’s Supreme Leader Ayatollah Ali Khamenei is hiding, calling him an "easy target."

President Donald Trump told ABC News on Sunday that he "may" call Minnesota Gov. Tim Walz after a political assassination sent shockwaves through the state.

The mobile phone service and Trump-branded smartphone, managed by President Donald Trump's adult sons, has raised ethical concerns due to Trump's direct influence over telecommunication policies.