India, July 20 -- The average price of regular gas in the US has gone back above $4 per gallon on Monday, according to the American Automobile Association (AAA). The latest increase comes as fighting between the United States and Iran has become more intense.

The conflict has disrupted oil shipments through the Strait of Hormuz, one of the world's most important oil shipping routes. Before the conflict started, the average US gas price was around $2.98 per gallon. Now, the national average has crossed $4 per gallon again after fresh attacks by both the US and Iran.

A year ago, Americans were paying about $3.14 per gallon on average. The $4 figure is a national average, so prices are not the same everywhere, according to AP. Some states ...