The mounting destruction and death toll in the conflict between Israel and Iran is raising fears of broader escalation, with the United States caught in the conundrum of military involvement in the Middle East's most perilous confrontation since the Gulf War.

Israel has escalated its bombardment of Iranian cities, including Tehran's state television headquarters; Iranian missiles have struck Tel Aviv.

Tehran said American bases in the Middle East could face reprisals if the U.S. helped repel Iranian attacks on Israel.

Iran has issued a warning to the UK, France and US amid its ongoing conflict with Israel. Tehran said it will hit ships and bases from all three countries if they get involved. Iran's state-run Fars news agency reports that an unnamed official vowed the strikes on Israel "will continue" and Iran will target US bases in the area.

Iran's strikes against Israel will continue, with targets set to expand to include U.S. bases in the region in the coming days, Iran's Fars news agency reported on Saturday, citing senior Iranian military officials.

Iran has warned it will target US, British, and French military bases in the region if they assist Israel in defending against Tehran’s attacks. With thousands of Western troops stationed across the region and Iran’s missile and drone capabilities expanding,

As Israel and Iran trade missile strikes, Iran is issuing a direct threat to the United States that further support of Israel will result in direct strikes on U.S. military bases in the region. NBC’s Matt Bradley reports for Sunday TODAY.

If nuclear negotiations fail and conflict arises with the United States, Iran will strike American bases in the region, Defence Minister Aziz Nasirzadeh said on Wednesday, days ahead of a planned sixth round of Iran-U.

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