IRGC attacks US unmanned vessel in Strait of Hormuz, hits two ships

Iran's Islamic Revolutionary Guard Corps attacked a US unmanned surface vessel operating in the Strait of Hormuz and struck two additional ships in the waterway, according to Al Jazeera's live coverage of the conflict on September 11.

Why this matters. An IRGC strike on a US unmanned naval asset marks a direct escalation against American military hardware in Hormuz, raising the odds of a US retaliatory strike and further disrupting the roughly 20 million barrels per day that normally transit the strait.