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Indexes rose in Europe but fell sharply in some Asian markets, while the price of U.S. oil topped $100 per barrel. After jumping to an initial gain of 0.9%, the S&P 500 quickly erased nearly all of it before seesawing lower.

Energy markets remain volatile as President Trump threatens Iran with an invasion to seize its oil while also suggesting a deal could soon end the war.

May contracts for Brent crude were trading more than 2% higher at over $115 a barrel on Monday.

Elevated crude prices could remain a problem for the stock market even if the Iran war ends. It all comes down to the Strait of Hormuz.

President Donald Trump has prioritized efforts to calm the financial markets during the Iran war, but his go-to moves are starting to fall flat

A likely strike by the United States hit the central Iranian city of Isfahan, sending a massive fireball into the sky, and Tehran struck a fully loaded Kuwaiti oil tanker in the Persian Gulf

Supporters of Iran’s imprisoned Nobel Peace Prize laureate Narges Mohammadi say she may have suffered a heart attack. Mohammadi’s legal team, accompanied by one family member, visited her in Zanjan Prison on March 29,