Exxon signs a contract with oil producers in Iraq or Saudi Arabia, Exxon pays them for the oil and those countries provide it, they put it on a boat and ship it

Exxon signs a contract with oil producers in Iraq or Saudi Arabia, Exxon pays them for the oil and those countries provide it, they put it on a boat and ship it to the US, the put it in a gas station and sell it to you by the gallon.