Saudi Arabia, the United Arab Emirates (UAE) and several other Sunni-majority countries have severed relations with Qatar since June 5, accusing the Gulf state of supporting terrorism based on its ties with the Muslim Brotherhood, Hamas and the Taliban.
Another point of departure is Qatar's ties with Iran, with whom it shares one of the world's biggest gas fields.
Qatar has denied the accusations and called the collective decision "unjustified." Kuwait, Turkey and the US have all urged a political solution as the bloc isolates Qatar using various ad hoc sanctions, including shutting down their airspace to Qataris and blocking import routes.
The dispute began in May when Qatar's Emir Sheikh Tamim bin Hamad al Thani was reported to have made statements on the state news agency supporting Iran. Doha said the statements were fabricated and disseminated via a hack.
Here are the latest developments in the crisis:
July 23, Sunday
President Recep Tayyip Erdogan on Sunday said his visit to the Gulf countries will focus on resolving the current standoff between Qatar and Saudi-led Arab countries.
"Nobody has any interest in prolonging this [Qatar] crisis anymore," he said, while addressing a press conference at Istanbul's Ataturk Airport before departing for Saudi Arabia as part of his two-day trip to Gulf countries.
He added that Ankara supports the immediate resolution of the ongoing crisis.
During his visit to Gulf countries, the Erdogan is set to visit Saudi Arabia, Kuwait and Qatar.
At his first stop in Jeddah, Erdogan will meet King Salman bin Abdul Aziz al-Saud and Crown Prince Mohammed bin Salman al-Saud.
He will later head to Kuwait and then to Qatar and meet Kuwaiti Emir Sheikh Sabah al-Ahmad al-Sabah and Qatari Emir Sheikh Tamim bin Hamad al-Thani.