President Trump fires off a pair of social media posts directed at Iran. Markets move lower on Wednesday morning.

Countries urge Tehran and Washington to pull back from the brink after helicopter downing in Hormuz Strait.

Countries urge Tehran and Washington to pull back from the brink after helicopter downing in Hormuz Strait.

Trump suggested his patience with Iran's leadership had run out, and they would now "pay the price" after negotiating too long.