Carnival Corp cut its annual profit forecast on Friday, as higher fuel costs pressure the cruise operator's margins amid rising geopolitical tensions.Attacks on oil and transport facilities across the Middle East and disruptions to energy flows through the Strait of Hormuz, which carries about a fifth of global oil flows, since the Iran war outbreak, have disrupted global supply and pushed up oil prices.The spike threatens Carnival's profits as it is the only major U.S. cruise line that typically does not hedge fuel.Carnival expects full-year adjusted earnings per share to be about $2.21…