Air, land and sea links have been halted to the country from Saudi Arabia, the UAE, Egypt and Bahrain.
Qatar, home to the Al-Jazeera news network, also plays a role in negotiating with groups that many governments keep distance from.
The diplomatic bust-up threatens the global prestige of Qatar, which has a large USA military base and is set to host the 2022 soccer World Cup. However, the 2014 crisis did not see a land and sea blockade as threatened now.
It was not clear if the decision would affect American military operations.
MP Waleed Al-Tabtabai said he was saddened with the developments among GCC states, adding that the Arab nation has two enemies: Israel and Iran.
They have given all Qatari visitors and residents two weeks to leave their territory.
Saudi Arabia's civil aviation authorities have banned Qatari planes from landing or stopping at its airports, as well as crossing Saudi airspace.
This included "instigating against the State, infringing on its sovereignty, adopting various terrorist and sectarian groups aimed at destabilizing the region including the Muslim Brotherhood Group, ISIS and Al-Qaeda".
The tiny island nation of Bahrain blamed Qatar's "media incitement, support for armed terrorist activities and funding linked to Iranian groups to carry out sabotage and spreading chaos in Bahrain" for its decision.
Ex-CIA chief testifies to House panel
It wasn't clear if Mr Manafort or Mr Flynn were directly influenced by Russians, or if Russians attempted to do so. Both have denied any collusion with the Russian government on the campaign to disrupt the election.
Apple Announces new AR Kit at WWDC
Below this area there is the New section which does not show new apps at all, but merely the apps in alphabetical order. There, Apple shares the lead with Chinese company Xiaomi, whose fitness tracking wristbands are mostly sold in China.
A split between Doha and its closest allies could have repercussions around the Middle East, where Gulf states have used their financial and political power to influence events in Libya, Egypt, Syria, Iraq and Yemen.
While restrictions have been imposed on state-owned Qatar Airways, there are no curbs imposed by the countries on carriers from India and other nations.
The airline said passengers holding a confirmed Qatar Airways ticket to any of the four countries between June 5 and July 6 are permitted to rebook their flights up to 30 days after their current departure date. According to the Qatar Stock Exchange website, the stock market indicator fell sharply from 9,923 to 9,400, followed by a continued decline to around 9,100 points.
Some Egyptian banks said they were halting dealing with Qatari banks.
Outside of Opec, South Sudan will drill 30 new wells this year and significantly boost oil output as it chases a peak 350,000 bpd target by mid-2018, the petroleum minister said on Monday.
"It seems that the Saudis and Emiratis feel emboldened by the alignment of their regional interests-toward Iran and Islamism-with the Trump administration", Gulf analyst Kristian Ulrichsen toldReuters news agency.
It dramatically escalates a dispute over Qatar's support for the Muslim Brotherhood.
It took a major gamble on the Muslim Brotherhood, supporting its brief stint in power in Egypt as well as the group's Islamist offshoots in the region, including Hamas, which rules the Gaza Strip.
Native sleep tracking software has so far been missing on the Apple Watch range, despite its popularity among rival devices . There are a couple new watch faces available in watchOS 4 , but the most in-depth one is the Siri-powered watch face.
Trump, he said, is not going to renegotiate the treaty despite suggesting he might do so "because he doesn't believe in it". China's president Li Keqiang said fighting climate change was a global consensus and an worldwide responsibility.
After the breakup of diplomatic missions of these States in Qatar will be closed, stops the sea and air links with the Emirate. In March 2014, Saudi Arabia, the United Arab Emirates and Bahrain recalled their ambassadors from Qatar over that rift.
Cook also praised the Apple developer community which has 16 million registered developers and added three million previous year . But Apple was careful to frame it as a product focused on music first - potentially differentiating it from the Echo and Home.
But the highlight of the AR section was a demo by Peter Jackson's new studio Wingnut AR, showing a complex scene created in Unity. The new software features a host of upgrades including iPhone-to-iPhone payments and a " do not disturb while driving " mode.
The UK broadcast industry pulled together in less than a week to provide live coverage of the One Love Manchester gig last night. During the almost three-hour concert, Grande was joined by a school choir onstage to sing her own hit, "My Everything".
Kuwait appears to be trying to play a mediating role between Qatar and Saudi Arabia , the United Arab Emirates and Bahrain . Qatar is the site of the sprawling al-Udeid Air Base, home to the forward headquarters of the US military's Central Command.
Earlier on Sunday, Usher shared links to websites where fans could tune into a live stream on the event on his Twitter page. Grande teased a faux finale of "One Last Time" alongside all of her musical guests towards the end of the show.
Khan said earlier this year Trump should be denied a state visit to Britain due to his "cruel and shameful" immigration policies. In the wake of Saturday evening's attacks, Khan called the attackers "cowardly terrorists" and said London was safe.
British police know identity of London attackers
Dick said Monday the attack was "ghastly", but that Londoners are pulling together and refusing to be cowed by extremists. Police said on Monday they had released all 12 people arrested in the neighbourhood on Sunday without charge.
US State Dept approves $1.4 billion in military sales to Saudi
Turkish officials have offered to mediate, which is promising given their good relations with both Qatar and other Gulf countries. Al-Jazeera news agency, which is based in Doha , Qatar's capital, was forced to shut down its office in Saudi Arabia on Monday.
Labour pledges to create one million decent jobs
In order for a majority government to form, a party needs to hold a minimum of 326 seats out of the 650 constituencies in the UK. The Prime Minister promised further investment and a new Mental Health Act to end workplace discrimination.
Gap Inc (GPS) Stake Increased by Bancorpsouth Inc
COPYRIGHT VIOLATION WARNING: This report was originally published by Stock Observer and is the property of of Stock Observer. The lowest 12-month price target for the shares is $20.00, which would be decrease of about -11% of its current value.
Kane: I'm one of England's leaders now
Since his appointment as permanent England manager in November, Southgate has tried to implement innovative training techniques. The Commando Training Centre's commandant, Colonel Mike Tanner, said he and his staff enjoyed working with Southgate's men.