Gulf leaders have gathered in Saudi Arabia for a summit that is expected to see the end of a three-year embargo against Qatar by its neighbours.
Qatar’s Emir Sheikh Tamim Al Thani was greeted by Saudi Crown Prince Mohammed bin Salman on arrival in al-Ula.
On Monday night, Saudi Arabia reopened its borders to Qatar and a US official said an agreement would be signed.
Saudi Arabia, the United Arab Emirates, Bahrain and Egypt cut ties with Qatar after alleging it supported terrorists.
The tiny, gas-rich state denied the accusation and rejected a list of demands issued by its neighbours at the start of the crisis, which included downgrading diplomatic ties with Iran and shutting down the Doha-based Al Jazeera network.