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The high seas were high drama this morning as a US Navy submarine collided with a US amphibious vessel in the Strait of Hormuz, which lies between Oman and Iran. Fifteen sailors were "slightly injured" in the incident and 25,000 gallons of diesel fuel leaked into the water, according to the Bahrain-based Fifth Fleet. The waterway is strategically important: "An estimated 40 percent of the world's crude oil passes through the strait on the way to market," the AFP reports.