Iran live updates: US-Iran deal in 'crisis stage' after strikes, Tehran official says

U.S. oil was trading at $72.83 per barrel -- up about 2% -- as of Monday morning after the latest round of exchanges between U.S. and Iranian forces. Global oil was trading at $77.52 per barrel, also up around 2%. The national average price for a gallon of regular gas was $3.81 on Monday, according to data from GasBuddy -- up 9 cents since last week. Traffic through the Strait of Hormuz has slowed in recent days, according to latest data from global ship tracking firm Kpler. Fourteen ships crossed through the strategic waterway on July 12, compared with 24 ships on July 11. -ABC News' Zunaira Zaki