### Chinese: 在各大国与伊朗核谈判未能满足各海湾国家愿望的背景下，沙特阿拉伯与伊朗进行了直接谈判。
### English: Against the backdrop of the failure of the nuclear negotiations between the major powers and Iran to meet the aspirations of the Gulf states, Saudi Arabia entered into direct negotiations with Iran.

### Improved English: Under the backdrop where the nuclear negotiation between major countries and Iran was not able to meet the demand of the gulf countries, Saudi Arabia and Iran conducted a direct negotiation.
