President Trump rejected an Israeli plan in recent days to kill Iran's Supreme Leader Ayatollah Ali Khamenei, a senior U.S. official told USA TODAY.

Israel’s military said it hit command centers of Iran’s Revolutionary Guard, while Iranian strikes overnight killed several people.

The retaliatory strikes came on Saturday, a day after Israel killed top Iranian military leaders and scientists and destroyed an aboveground nuclear enrichment plant near Natanz.

Investors have been weighing the odds of further escalation in the conflict and spillover into the broader oil-rich Middle East.

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.

Stocks are down on Friday, with oil prices surging in the wake of the Israel's military strike on Iran. The S&P 500 slid 48 points, or 0.5%, to 5,998 points in early trading, while the Dow Jones Industrial Average dropped 559 points,

Out of precaution, the U.S. withdrew diplomats from Iraq on Wednesday and authorized the voluntary departure of U.S. military families from the Middle East should such an attack occur and prompt retaliation by Iran, the Times and CBS News reported.