US gas prices fall below $4 for 1st time since March, but still 25% higher than last year

US gas prices fell below $4 per gallon for the first time since March, averaging $3.999, following a US-Iran agreement to dilute Iran’s enriched uranium stockpile and waive sanctions. Prices remain 25% higher than last year, with regional variations like $5.64 in California and $3.58 in South Carolina. The deal aims to end hostilities and initiate 60-day negotiations on Iran’s nuclear program.