Strait of Hormuz: The Gulf's Gathering Storm The recent spate of attacks on tankers in the Strait of Hormuz has brought tensions between Iran and the West to a boiling point.
The US has revoked a sanctions waiver that allowed the sale of Iranian oil, citing "unacceptable" actions by Tehran.
The UN's International Maritime Organization reports that Tuesday's attacks marked the highest number of incidents in a single day since late April.