Qatar is the world's largest exporter of liquefied natural gas (LNG) and produces up to 77 million tonnes of gas each year. In April 2017, the Gulf state announced it was boosting output in the world's largest gas field - the "North Dome" - off Qatar's northern coast, which it shares with Iran.
Gas has helped transform the emirate into one of the richest countries in the world, propelling its rise into a major regional player and helping Qatar fund huge infrastructure projects and host major events such as the 2022 FIFA World Cup.
So when four Arab states - Saudi Arabia, the UAE, Bahrain and Egypt - severed diplomatic and trade relations with Qatar on June 5, cutting off land, sea and air links, there were concerns about the effect on Qatar's economy.
How would the diplomatic rift between Qatar and some of its neighbours affect Qatar's economy, and Qatar's oil and gas industry in particular?
Al Jazeera spoke to the president and CEO of state-run Qatar Petroleum, Saad Sherida al-Kaabi, about the GCC crisis, Qatar's oil and gas industry, and the future of his company.
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