### 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: In the background that nuclear talks between major powers and Iran failed to meet the wishes of various Gulf states, Saudi Arabia has held direct talks with Iran.
### Errors: There is a major error of incorrect translation is missing content from the correct translation at "various Gulf states". There is a minor error of incorrect translation has stylistic problems at "has held direct talks".

### 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.