Russia's invasion of Ukraine has triggered sweeping Western sanctions that threaten to disrupt commodity flows, raising the spectre of gas shortages, blackouts and further price increases.
Qatar's emir and the crown prince of Abu Dhabi met during the Beijing Winter Olympics, even as the UAE has yet to restore diplomatic ties with Doha.
The visit comes after Tehran indicated that it is ready to consider direct talks with Washington if it feels it can get a "good nuclear deal".
Speaking to reporters on a flight returning from Qatar, Turkey's President Erdogan said companies picked by Doha and Ankara will simultaneously negotiate with each other and the Taliban on operating the Afghan airport.
Qatar's Emir Sheikh Tamim bin Hamad al Thani and the visiting US secretaries of state and defence discussed developments in Afghanistan and efforts to enhance security in the country, the emir's court said.
Among the participants are archenemies Iran and Saudi Arabia, whose rivalry has often played out in Iraq and other countries across the region, including Yemen and Lebanon.
As future of 2015 deal limiting Tehran’s nuclear programme hangs in the balance following US elections, Qatar’s foreign minister meets his Iranian counterpart in an attempt to bring Tehran and pact cosignatories closer to a solution.
Turkish Foreign Minister Mevlut Cavusoglu and his Qatari counterpart Sheikh Mohammed bin Abdulrahman al Thani also discussed regional issues during a meeting in Doha.
Over 530 Turkish companies operate in Qatar where 179 Qatari companies do business in Turkey.
Four Arab countries cut off all ties with Doha in 2017. Now Kuwait is stepping in as a mediator between Saudi Arabia and Qatar as it readies itself with a meeting with the US President.
Funeral of late president Beji Caid Essebsi attended by foreign leaders, including French President Emmanuel Macron and Qatar's Emir Sheikh Tamim bin Hamad Al Thani.
Qatar Emir Sheikh Tamim al Thani meets with US President Donald Trump in Washington after his country enters the third year of a blockade by Gulf neighbours Saudi Arabia, the UAE and Bahrain.
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