President Donald Trump warned that "it's possible" that the United States "could get involved" in the ongoing Israel-Iran conflict if it continues to escalate during an exclusive interview with ABC News' Rachel Scott on Sunday (June 15).

Israel and Iran exchange missile attacks for a third day; nuclear sites hit, death tolls rise, airspace shut, U.S. warns Tehran against retaliation.

BEIRUT — Iran and Israel traded air raids and ballistic missile barrages overnight and into the evening Sunday, with neither side showing any inclination to back down from an escalating grudge match between the two longtime enemies.

Former Vice President Mike Pence said on “State of the Union” Sunday that if Israel’s attack doesn’t somehow convince Iran to make major concessions in Trump’s diplomatic attempt to end its nuclear program, then the United States should be prepared to join the conflict.

President Donald Trump rejected an Israeli plan in recent days to kill Iran's Supreme Leader Ayatollah Ali Khamenei, two U.S. officials told ABC News. The officials stated that Israel shared with the United States that they had a window to kill Iran's leader but the president was not on board with the plan.

The conflict, the most intense fighting between the two countries in decades, has been met in the United States with feelings of “frustration and helplessness,” as well as heartbreak.

Israel and Iran traded strikes for a fourth day early Monday, damaging two high-rise residential buildings in central Israel, emergency officials said. Magen David Adom, Israel's emergency aid organization,

Experts suggest the U.S. has a strategic opportunity to leverage Iran's weakened position for a nuclear deal after Israel's targeted strikes on Iranian nuclear and military sites.