That is the Euphrates.
Which gulf war? There were 3 of them.
Bahrain
kwait
deserts
Ancient Persia?
In the approximate centre of Middle East.
Asia,under Iran and next to Iraq
They used oil resources.
George Bush Senior did.
Saddam Hussein caused the first Persian Gulf War, 1990 to 1991, when he invaded Kuwait.
The US Navy patrolled the Persian Gulf during the 1980-1988 Iran-Iraq War.