U.S. inflation climbed above 4% for the first time in three years in May as rising energy costs tied to the Iran war pushed consumer costs sharply higher U.S. inflation climbed above 4% for the first time in three years in May as rising energy costs tied to the Iran war pushed consumer costs sharply higher, with the Consumer Price Index rising 0.5% from April and 4.2% from a year earlier, according to... [2157 chars]