Kharg Island

As tensions spike in the Strait of Hormuz, President Donald Trump says talks with Iran are advancing—but warns he will 'finish what we started' with sweeping strikes on energy infrastructure if the waterway stays closed.

About 5,000 Marines have already arrived in the region, with another 5,000 expected this week, according to U.S. reports. President Donald Trump has not yet decided whether to authorize broad or targeted ground operations in Iran.