Airstrikes in Yemen and Iraq this week weighed on the market, and independent investment consultant David Darst had a warning for investors if more strikes occur.
"If you get a third use of that word 'airstrikes' somewhere else, that could cause the market to sell off," he said in an interview with CNBC's "Closing Bell."
If that happened, Darst said he'd be a buyer.
U.S. and coalition forces conducted 10 airstrikes against Islamic State fighters in Iraq during a 24-hour period and U.S. forces led six airstrikes in Syria, the U.S. military said Friday. The news came a day after Saudi Arabia and its Gulf allies launched airstrikes against rebels in Yemen.