Qatar will sign a deal to buy as many as 36 F-15 jets from the USA despite tensions over President Donald Trump's backing for a Saudi-led coalition's move to isolate the country for allegedly supporting terrorism.
The sale "will give Qatar a state-of-the-art capability and increase security cooperation and interoperability between the United States and Qatar", the defence department said in a statement.
Saudi Arabia and its allies - led by the United Arab Emirates, Egypt and Bahrain - have said there can be no mending of ties until Qatar ends its support for groups like the Muslim Brotherhood, which the four governments blacklist as a "terrorist" group.
The United States and Qatar have signed a deal for the purchase of F-15 fighter jets worth $12 billion even as the Donald Trump-led administration is trying to navigate through an ongoing diplomatic crisis in the Gulf countries. It is home to 10,000 American troops and a major American military base that acts as the center of US operations in Syria, Iraq and Afghanistan.
Trump has recently denounced Qatar as a state sponsor of terrorism following multiple Middle Eastern nations severing diplomatic ties with the nation.
The Pentagon said the jet sales, priced at $12 billion (10.7 billion euros), would boost cooperation.
Other countries have now entered the fray and are attempting to broker negotiations between Qatar and Saudi Arabia, including Turkey and Russian Federation.
"We share our views to resolve this problem and remain impartial, but we say what is wrong without hesitation", Cavusoglu said on his return to Ankara from Kuwait on Thursday. Their action has been "hampered by the bad optics of blocking the flow of food and medicine, the hardship opposed on individuals", and "Qatar emerging as an underdog putting up a fight against what many may have seen as bullying", he said. More than 100 aircraft operate from there.
Saudi Arabia on Tuesday said the closure of its airspace to flights from Qatar was within the kingdom's sovereign right to protect its citizens from any threat.
One Qatari source said that the Emirate was purchasing 36 of the F-15 tactical fighter jets in the deal finalized in Washington on Thursday.
Tillerson has since sought to mediate the dispute from Washington, meeting with Saudi Arabia's foreign minister on Monday. "Our expectation from King Salman is that he be the leader in solving this problem", Cavusoglu said at a joint news conference with his Tunisian counterpart.