Here's how far a strategist says stocks would have to drop to 'guarantee' a Trump pivot on Iran

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• The US-Iran conflict has weighed on stocks and pushed up oil prices.
• For Trump to pivot from the Iran war, the S&P 500 would have to drop at least 10% BCA's Marko Papic says.
• Papic is a geopolitical expert and the chief strategist at BCA Research.

Stocks have been battered by volatility this week after the US and Israel launched attacks on Iran, but how far would the market have to drop before things get too painful for Donald Trump?