Qatar is the nation that extends into the Persian Gulf.
Kuwait is an "oil nation on the Persian Gulf"Kuwait is one.
Iran is north of the Persian Gulf and the Strait of Hormuz
Qatar is a small country that juts out into the Persian Gulf and is a peninsula.
That nation is Bahrain. It is in the Persian Gulf.
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Qatar
Iraq.
bahrain is a small group of islands in the western persian gulf
Iran is the only country that borders both the Caspian Sea and the Persian Gulf.
Persian Gulf
It is Saudi Arabia.