Fuel costs are rising after it gas became clear that Iran is not reopening the Strait of Hormuz, one of the most important oil export corridors in the world.

Average gas prices in the United States hit $4.18 on Tuesday, their highest level since the Iran conflict started, as peace talks stalled again.

Californians have been paying nearly $6 a gallon. See why prices are so high, how they compare historically, and how Trump's Iran blockade fits in.