The Bureau of Labor Statistics reported that the Consumer Price Index increased 4.2 percent year-over-year in May, up from 3.8 percent in April, with core CPI excluding food and energy at 2.9 percent. Multiple outlets attribute the headline rise primarily to energy prices linked to the Iran conflict, while core measures remain above the Federal Reserve's 2 percent target. Disputed elements include the exact contribution of energy to the monthly change and earlier February readings.