Bilateral relations exist between the State of Qatar and the Kingdom of Bahrain. They first began in 1971. On 5 June 2017, Bahrain officially cut diplomatic ties with Qatar, giving the country's diplomats 48 hours to leave. On 6 January 2021, Qatar and Bahrain agreed to fully restore diplomatic ties. History Bahrain and Qatar shared a similar history for belonging to the Gulf region and speak Arabic language as the first language, as well as having Islam as the state religion. Territorial disputes Starting in 1936, Qatar and Bahrain were involved in territorial disputes over the Hawar Islands, Fasht Al Azm, Fasht Dibal, Qit'at Jaradah, and Zubarah. In 1996, Bahrain boycotted the GCC summit hosted in Qatar, claiming that the last summit held in Qatar in 1990 was used as a platform to reiterate their territorial claims to the other GCC states. They also cited the 1986 Qatari incursion in Fasht Dibal as a reason for not attending. In December 1996, two Qatari citizens, Salwa Fakhri and Fahad Al Baker, were arrested on charges of espionage in Bahrain. During the trial, it was purported that Qatar had been involved in a prior spying mission which was uncovered by Bahraini authorities in 1987. In January 1997, a member of Bahrain's ruling family, Nasser Al Khalifa, defected to Qatar in a highly publicized instance in which he flew a Bahraini military helicopter to the Qatari capital. The disputes were resolved by the International Court of Justice (ICJ) on 16 March 2001, giving Bahrain the Hawar Islands (excluding the Janan Island), Qit'at Jaradah, and Fasht Al Azm, with Qatar receiving Zubarah, Fasht Dibal, and the Janan Island. Zubarah From the 19th century onward, the two countries periodically disputed the ownership of Zubarah, a town on the north-west coast of Qatar. Tensions were heightened in 1939 after Qatar constructed a fort in the town; an act which was deemed illegal by Bahrain. A settlement was reached in 1944 during a meeting mediated by the Saudis, in which Qatar recognized Bahrain's customary rights, such as grazing, and visiting with no formalities necessary. However, this accord was broken shortly after, following the construction of another fort by Qatar. In 1953, Bahrain reiterated its claims over Zubarah when it sent a party of students and teachers to Zubarah who proceeded to write 'Bahrain' on the walls of Zubarah Fort. Furthermore, the Bahrain Education Department published maps which