Donald Trump hasn't ruled out U.S. involvement in the current hostilities as the Iran-Israel conflict escalates.

Tulsi Gabbard left no doubt when she testified to Congress about Iran’s nuclear program earlier this year.The country was not building a nuclear weapon, the national intelligence director told lawmakers,

We are doing what we need to do,” the Israeli leader told ABC News when asked if he plans to go after Ayatollah Ali Khamenei.

Trump arrived at the White House early Tuesday at a moment of choosing in his presidency. Israel, with five days of missile strikes, has done considerable damage to Iran and believes it can now deal a permanent blow to Tehran’s nuclear program — particularly if it gets a little more help from the Republican president.

Israeli Prime Minister Benjamin Netanyahu spoke with ABC News' Jonathan Karl about Israel's attack on Iran's nuclear program and Iran's retaliation against his country.

President Trump said early Tuesday morning that he wants "a real end" to Iran's nuclear problem, with Tehran "giving up entirely" its enrichment activities. He said he was not just working toward a ceasefire to end the war between Iran and Israel,

As tensions rise after Israeli airstrikes on Iran's nuclear sites, Prime Minister Netanyahu accused Iran of plotting against the U.S. president.