Qatar population was 2.6 million: 313,000 Qatari citizens and 2.3 million expatriates. Islam is the official religion of Qatar. The country has the highest per capita income in the world. Qatar is classified by the UN as a country of very high human development and is widely regarded as the most advanced Arab state for human development. Qatar is a high-income economy, backed by the world's third-largest natural gas reserves and oil reserves. Qatar has been ruled by the House of Thani since Mohammed bin Thani signed a treaty with the British in 1868 that recognised its separate status. Following Ottoman
Surat Thani International Airport Thai Airways Flight 261, an A310-200 (HS-TIA), bound for Surat Thani from Bangkok, was making its third landing attempt in heavy rain when it crashed into a rice paddy about from the airport; 101 of the 146 passengers and crew aboard were killed. Surat Thani International Airport Surat Thani International Airport () is in the Phunphin District, Surat Thani. The airport, 21 km west of Surat Thani, also is home to the Royal Thai Air Force (RTAF) squadrons. Surat Thani has a single paved runway. As well as being a commercial facility, Surat Thani Airport is an active RTAF base,