US President Donald Trump has claimed credit for the pressure being placed on Qatar by Gulf neighbours who accuse it of supporting terrorism in the region.
Saudi Arabia, Bahrain, the UAE, Yemen, Libya’s eastern-based government and the Maldives have all cut diplomatic and other ties with Qatar.
Mr Trump said he was told during his recent visit to Saudi Arabia that Qatar was funding “radical ideology”.
He added that the visit was “already paying off”.
Analysts say the timing of the move, two weeks after a visit to Saudi Arabia by Mr Trump, is crucial.
Mr Trump’s speech in the Saudi capital Riyadh, in which he blamed Iran for instability in the Middle East and urged Muslim countries to take the lead in combating radicalisation, is seen as likely to have emboldened Gulf allies to act against Qatar.
“During my recent trip to the Middle East I stated that there can no longer be funding of Radical Ideology. Leaders pointed to Qatar – look!” Mr Trump tweeted on Tuesday.
He later tweeted: “So good to see the Saudi Arabia visit with the King and 50 countries already paying off. They said they would take a hard line on funding… extremism, and all reference was pointing to Qatar. Perhaps this will be the beginning of the end to the horror of terrorism!”
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In the same week as Mr Trump’s Riyadh speech, Egypt, Saudi Arabia, Bahrain and the UAE blocked Qatari news sites, including Al Jazeera.
On Monday, Saudi Arabia, Bahrain, and the UAE gave Qatari nationals two weeks to leave, banned their own citizens from travelling to Qatar, and cut all transport links.
Qatar is backing plans for talks with its regional rivals as the diplomatic row gathers pace.
Kuwait – one of the Gulf countries not involved in the dispute – has offered to mediate talks, and Qatar said it was receptive to dialogue. Kuwait’s emir is travelling to Saudi Arabia for talks.
Qatari Foreign Minister Sheikh Mohammed Bin Abdulrahman al-Thani told Al Jazeera that his country was seeking “a dialogue of openness and honesty”.
He said Qatar would not retaliate but was unhappy with regional rivals “trying to impose their will on Qatar or intervene in its internal affairs”.
He later told the BBC that his government had told President Trump during his Middle-East trip that there was no evidence that Qatar was supporting radical Islamists.
What has happened?
The states that joined Monday’s move against Qatar, a tiny but gas-rich peninsula, include some of the biggest powers in the Arab world.
Saudi Arabia, Bahrain and the UAE closed all transport links.
Disruption to airspace in the Gulf began on Tuesday morning local time. Doha, Qatar’s capital, is a major hub for international flight connections.
Airlines affected by the airspace restrictions include Qatar Airways, Etihad Airways and Emirates. Saudi Arabia and Bahrain have revoked the licences of Qatar Airways and ordered its offices to close within 48 hours.
When avoiding Saudi Arabia, their massive – and only – neighbour, Qatar’s planes are having to take more indirect routes, leading to longer flight times.
In a country reliant on imported food, residents have started to stockpile.
“People have stormed into the supermarket hoarding food, especially imported ones,” one Doha resident, Eva Tobaji, told Reuters news agency. “It’s chaos – I’ve never seen anything like this before.”
A substantial amount of Qatar’s food is transported across the border from Saudi Arabia, which is being closed. That is also an important route for construction materials – needed for the energy industry and for the preparations for the 2022 football World Cup.
Qatar’s exports are dominated by oil and gas. They are mostly seaborne, so should not be immediately hit, but the general economic disruption could have an impact if the dispute drags on.
That possibility pushed the price of crude oil higher, but only briefly. Qatar is a member of the exporters’ group Opec and the dispute could yet undermine the organisation’s efforts to raise prices by restricting production.
Why has this happened?
While the severing of ties was sudden, it has not come out of the blue, as tensions have been building for years, and particularly in recent weeks.
Broadly, two key factors drove Monday’s decision: Qatar’s ties to Islamist groups, and to Iran, Saudi Arabia’s regional rival.
Wealthy individuals in Qatar are believed to have made donations and the government has given money and weapons to hardline Islamist groups in Syria – Qatar says this is not the case.
The Financial Times also reports that Gulf allies were angry that Qatar had paid a $1bn (£773m) ransom to jihadists and Iranian security officials after Qatari nationals were kidnapped in Iraq and Syria.
Saudi Arabia, too, has been accused of funding IS, either directly or by failing to prevent private donors from sending money to the group – allegations it denies.
The Philippines, which has an estimated 200,000 residents in Qatar, said it had stopped the deployment of workers to the Gulf state. Labour official Silvestre Bello said he feared Filipinos in Qatar would “be the first victims” in the event of riots over food shortages