With an estimated $335 billion of assets in its sovereign wealth fund, Qatar looks able to avoid an economic crisis over the decision on Monday by Saudi Arabia, Egypt, the United Arab Emirates and Bahrain to cut air, sea and land transport links.
Saudi Arabia accuses Qatar of supporting "Iranian-backed terrorist groups" in its Qatif province and in neighboring Bahrain - and of backing the Yemeni rebels its coalition is fighting.
It has also cut diplomatic and consular relations with Qatar.
Qatari nationals are to be banned from entering the UAE, and Qatari residents of the country have been given two-week notice to leave the leave the country.
Central Command officials and the Pentagon did not immediately respond to a request for comment.
Saudia Airlines, Etihad, Emirates, Flydubai and Gulf Air said they would halt all flights in and out of Doha starting Tuesday morning.
Saudi Arabia, Egypt, the UAE, Bahrain, Yemen and Maldives suspending ties with the United States ally will bring unwanted complication for the U.S. military.
Saudi Arabia, Egypt, United Arab Emirates and Bahrain cut relations with Qatar in a coordinated move.
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He added that one of the most hard things to tackle was the fact some of the victims of the attack had been couples. They also searched several locations in connection with the terror attack, the third Britain has seen since March.
Qatar's Foreign Affairs Ministry said there was "no legitimate justification" for the countries' decision, though it vowed its citizens wouldn't be affected by it.
Qatar's emir, believed to be just 37 years old, could retaliate by withdrawing from the six-nation Gulf Cooperation Council and redraw alliances to snub Saudi Arabia's 31-year-old Deputy Crown Prince Mohammed bin Salman and Abu Dhabi's Crown Prince Mohammed bin Zayed, who are believed to be the two main figures orchestrating the standoff.
The crisis comes after U.S. President Donald Trump's recent visit to Saudi Arabia for a summit with Arab leaders.
Qatar has "spread chaos in Bahrain in flagrant violation of all agreements and covenants and principles of worldwide law without regard to values, the law, or morals or consideration of the principles of good neighborliness or commitment to the constants of Gulf relations, and in denial of all previous commitments", it said.
"At the moment there is nothing on Qatar issue, (we) will issue a statement if some development takes place", Zakaria said.
Late last month, Saudi Arabia, the UAE, Bahrain and Egypt blocked several Qatari media outlets, including state-funded Al Jazeera, over comments allegedly made by Qatari Emir Sheikh Tamim Al Hamad Al Thani.
Doha has denied supporting militant groups.
Tillerson said despite the impasse, he did not expect it to have "any significant impact, if any impact at all, on the unified fight against terrorism in the region or globally".
The stories quoted him questioning USA hostility towards Iran, speaking of "tensions" between Doha and Washington, commenting on Palestinian Islamist movement Hamas and speculating that Trump might not remain in power for long. Western officials also have accused Qatar of allowing or even encouraging funding of Sunni extremists like al-Qaida's branch in Syria, once known as the Nusra Front.