President Donald Trump wants to "de-escalate" the crisis and is committed to holding talks with all parties, White House spokeswoman Sarah Sanders told reporters Monday.
But there could be complications if the three countries refuse to work with Qatar - all of which are part of the Gulf Cooperation Council - on the anti-ISIS fight. Even before Monday, Qatar had appeared unperturbed by the growing tensions.
In the 1990s, Gulf leaders had toyed with intervening in Qatar after the former emir had overthrown his father, which they saw as a bad precedent for power transitions among the Gulf's royal families. The leadership of VCU's campus in Doha is in close contact with the U.S. Embassy, deans of the other universities in Education City, Qatar Foundation officials and Global Rescue for any contingency planning regarding the diplomatic situation in the Gulf region. "Saudi Arabia and its allies will not accept any solution short of capitulation".
It hosts the largest USA airbase in the region, which is crucial in the fight against Islamic State group jihadists.
This is a calculated move based more on Arab state interests in the region mixed in with some US national security concerns. "That would be very destabilizing in a region that's already very unstable".
Qatar has for years parlayed its enormous gas wealth and media influence into a broad influence in the region.
NPR's David Welna, who is traveling with Tillerson and Mattis, notes that the rift among US allies "comes just 10 days after President Trump addressed an anti-terrorism summit of Arab leaders in Saudi Arabia, and some see Trump's siding there with Sunni monarchs and his rhetoric against Iran as having given a kind of green light to blackballing this Gulf nation".
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"Our flights to and from Doha are operating as per schedule", Jet Airways said in a tweet.
"Qatar pledged to change its ways after ambassadors were recalled from Doha, especially towards Egypt", Dr Al Shateri added.
In Riyadh, Trump made an impassioned appeal to Arab and Islamic leaders to "drive out" terrorists, while singling out Iran as a key source of funding and support for militant groups.
More than 10 per cent of all airline seats in and out of Qatar are assigned to flights involving the four nations imposing the travel ban, said Diogenis Papiomytis, director of aerospace at Frost & Sullivan, with most passengers who use those links transferring on or off the long-haul services from which Qatar Air derives the bulk of its earnings. "[They] have chose to deal with Qatar's alternative approach on the assumption that they will have the [Trump] administration's backing".
Qatar's efforts to prepare for the hosting of World Cup 2020 as it has been nominated to do so also stands to suffer from the isolation as it has complicated the flow of manpower and construction materials into the country.
"What is happening is the preliminary result of the sword dance", Hamid Aboutalebi, deputy chief of staff of Iran's President Hassan Rouhani, tweeted in a reference to Trump's recent visit to Saudi Arabia.