The U.S. State Department has approved a possible $1.1 billion sale of support services and facilities to Qatar for its F-15QA fighter aircraft program, a Pentagon agency said on Wednesday.

Bahrain has decided to impose visas on travellers from Qatar, which is embroiled in a diplomatic crisis with its Arab neighbours, Bahraini state media reported Tuesday.

Bahrain said on Tuesday it would impose entry visas on Qatar nationals and residents in what it called a security measure.

Qatar has agreed to strengthen counter-terrorism cooperation with the United States to crack down on illicit financing of militant groups, a joint Qatari-U.S. statement said on Monday following a visit by U.S. Treasury Secretary Steven Mnuchin.

Bahrain's foreign minister on Monday suggested suspending Qatar's Gulf Cooperation Council membership until it accepts the demands of its Arab adversaries in the region's worst crisis in years.

Former Qatari Prime Minister Hamad bin Jassem Al Thani revealed that a “sign”, given to Bahrain's King Hamad bin Isa Al Khalifa, was behind the cancellation of the King’s meeting with Bahraini opposition leader Sheikh Ali Salman amid the February 2011 events.

Qatar has signed 36 worker protection agreements with countries that provide much of its labour force, state media reported on Wednesday, weeks before the International Labour Organisation is to decide whether to investigate it for worker abuse.

Qatar’s foreign minister Mohammed bin Abdulrahman Al Thani said that Qatari forces participating in US-led activities against Islamic State or working with Bahrain-based US Fifth Fleet were expelled after the recent Gulf dispute.

CEO of Gulf State Analytics, Giorgio Cafiero, said in an article in the “Al-Monitor” that tensions between Bahrain and Qatar have reached an enormously high level. Last month, Bahrain’s Shura Council condemned Doha’s alleged “coordination and cooperation” with the Arabian archipelago country’s Shiite opposition and Iran “to spark chaos” amid the unrest of 2011.

A controversial member of Qatar's royal family said Saturday that Qatari authorities have frozen his bank accounts over his role in Doha's crisis with its neighbours.

A senior United Arab Emirates official said Qatar's hosting of the 2022 World Cup should depend on it rejecting "extremism and terrorism", in comments that drew the soccer tournament into the diplomatic row among rich Gulf monarchies.

The total number of Bahrainis working in the Gulf Cooperation Council (GCC) States reached 2,604, including 130 Bahrainis in Qatar, whose diplomatic relations with Bahrain have been severed for over four months, official statistics revealed.

The United States will soon decide whether to keep open a Taliban office in Qatar as America steps up its Afghan war effort, U.S. Defense Secretary Jim Mattis said on Tuesday, adding he was looking at who represents the increasingly fractious insurgency.

Iran's foreign minister traveled to Oman for a daylong visit Monday with officials in the sultanate, which has served as a crucial link between Iran and the U.S. in the past.

The value of Qatar’s imports rebounded sharply in August from July, government data showed on Wednesday, suggesting the economic impact of sanctions imposed by other Arab states is fading.

Qatar’s Emir Sheikh Tamim bin Hamad al-Thani on Tuesday renewed a call for “unconditional dialogue” to end a crisis pitting Qatar against four Arab states while U.S. President Donald Trump said he expected the dispute to be resolved quickly.

Qatar accused Bahrain on Tuesday of abusing a routine fisheries enforcement case to deepen a three-month diplomatic crisis between the emirate and its Gulf neighbours.

Qatar's defense minister has signed a letter of intent to purchase 24 Typhoon jets from British defense group BAE Systems, in a move that could anger other Gulf countries boycotting Doha.

Qatar Emir Sheikh Tamim bin Hamad Al-Thani on Thursday held talks in Turkey with the emirate's chief ally President Recep Tayyip Erdogan, in his first visit abroad since the start of a diplomatic crisis with Saudi Arabia.

Saudi Arabia on Saturday suspended any dialogue with Qatar, accusing it of “distorting facts”, just after a report of a phone call between the leaders of both countries suggested a breakthrough in the Gulf dispute.