Israel strikes Iran's nuclear facilities, but an expert cautions that the heavily protected Fordow site remains a dangerous threat that only U.S. military capabilities can neutralize.

Tensions escalate as Iran's Supreme Leader Ayatollah Ali Khamenei declares “the battle begins” following threats from US President Trump. Iran launched ballistic missiles at Israel, prompting retaliatory airstrikes in Tehran and Karaj.

Lawmakers on both sides of the aisle are backing a resolution that would block the White House from joining Israel’s military campaign against Iran without a formal declaration of war or other authorization from Congress.

ToplinePresident Donald Trump directly threatened Iran’s Supreme Leader Ayatollah Ali Khamenei on Tuesday and alluded to the possibility the U.S. could strike Iran, as speculation looms over the president’s next move in the conflict after he abruptly left the G7 summit in Canada to deal with the crisis.

The decision to launch a full-on attack on Iran would be in the gray area between the president’s powers as commander in chief and the Constitution’s mandate that only Congress can declare war.

Israel and Iran launched a new round of attacks as the conflict between the two heavily armed rivals enters its fifth day.

Donald Trump has said the White House knows "exactly" where Ayatollah Ali Khamenei is hiding, adding that there was no intention to kill him "for now."

When Israel launched its series of strikes against Iran last week, it also issued a number of dire warnings about the country’s nuclear program, suggesting Iran was fast approaching a point of no return in its quest to obtain nuclear weapons and that the strikes were necessary to preempt that outcome.

Mo., addresses President Donald Trump’s stance on the Israel-Iran conflict 'The Ingraham Angle.'