Oman’s Foreign Minister Youssef bin Alawi met with Iran’s Foreign Minister Javad Zarif on Monday in capital Tehran, in his third visit to the country in the last nine months.

According to a statement made by the Iranian Foreign Ministry, which did not give any details about the meeting, bin Alawi and Zarif met at the foreign ministry in Tehran.

The visit is regarded as another attempt to ease U.S.-Iran tension, as Oman — having friendly ties with both Tehran and Washington — is one of the mediator countries.

Since the severing of diplomatic relations in 1980, the

Read more: Oman, Iran foreign ministers hold talks in Tehran