Trade sources pointed to the likelihood of shortages growing in Qatar until the crisis eased.
The U.S. military base in Qatar is home to about 10,000 U.S. troops and the host of the 2022 FIFA World Cup. Qatar, though a OPEC nation, is considered a minor crude producer.
Qatar is home to the forward headquarters of the USA military's Central Command.
USA military's Al Udeid Air Base acts as the reigonal base for conducting daily air missions. Al-Fassi wondered if people will be compensated for the expenses of moving country and getting new homes. It helped free members of its own royal family from captivity by Shiite militants in Iraq.
In short, Qatar maintains a complicated series of relationships with virtually every single actor in the region. Shares on the Qatari exchange tumbled at the news, dropping 8 percent amid fears that the country's economic growth is slowing down.
Bahrain, Egypt, Saudi Arabia and the United Arab Emirates all announced they would withdraw their diplomatic staff from Qatar, a gas-rich nation that will host the 2022 FIFA World Cup and is home to a major USA military base.
Riyadh has accused Qatar of backing terrorism and extremism, while Bahrain has charged Qatar with interfering in its internal affairs.
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"Destinations in Africa and across the Indian Ocean may no longer be sustainable as part of the Qatar Airways network".
Qatar was also expelled from the Saudi-led coalition fighting in Yemen. At least 40% of Qatar's food products are imported from Saudi Arabia and photos of grocery stores in Doha shared with media by residents showed empty shelves. The group denies any connection with terrorism and says it seeks political change by peaceful means.
Qatar's Minister of Defence Khalid bin Mohammad Al-Attiyah (R) welcomes U.S. Defence Secretary James Mattis (C) and U.S. Ambassador to Qatar Dana Shell Smith (L) at his residence on April 22, 2017 in Doha, Qatar. Secretary of State Rex Tillerson said the USA stands ready to help defuse the tension.
The call was a clear, public rebuttal of Saudi Arabia's efforts to force Qatar to fall in line against Shiite-ruled Iran, which the Sunni kingdom sees as its No. 1 enemy and a threat to regional stability.
Diplomatic tensions may also undermine Qatar's regional expansion. Plans to bar Qatari jets from entering airspace over the countries that could be even more problematic, inflating expenses by forcing significant diversions and putting the viability of some routes in jeopardy.
Emirates and fellow long-haul specialist Etihad Airways PJSC of Abu Dhabi are set to cease operations to Doha on June 6, along with discounters FlyDubai and Air Arabia of Sharjah.
In total, research activities that address important issues to the country are valued at more than $196 million.
Turkey also called for dialogue to settle the dispute and a government spokesman said President Tayyip Erdogan was working for a diplomatic solution to the rift.
In this August 3, 2015 file photo, Qatar Emir Sheik Tamim bin Hamad Al-Thani waits for the arrival of U.S. Secretary of State John Kerry ahead of their meeting, at Diwan Palace in Doha, Qatar.