### 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: Saudi Arabia and Iran engaged in direct negotiations against the backdrop of nuclear negotiations between major powers and Iran failing to meet the wishes of the Gulf countries.

### 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.
