While saying an eagerness to resolve the crisis was seen in meetings with Qatari officials, Cavusoglu said Qatari officials are seeking proof of the accusations levelled against their country.
"The Prime Minister raised the ongoing isolation of Qatar in the Gulf region, calling on all sides to urgently de-escalate the situation, engage meaningfully in dialogue, and restore Gulf Cooperation Council unity at the earliest possible opportunity", a spokesperson for May said in a statement.
Qatar hosts the biggest U.S. military base in the Middle East with more than 11,000 troops deployed or assigned to al-Udeid Air Base.
In a sense, US President Donald Trump "wants to be able to have honest discussions with Qatar as a friendly nation, not as an adversary", the analyst added.
Congress previous year approved the sale of as many as 72 F-15s in an agreement valued at as much as US$21 billion, providing authorisation for the deal that was completed on Wednesday.
"This is of course proof that United States institutions are with us but we have never doubted that", Reuters news agency quoted a Qatari official in Doha as saying.
WASHINGTON: The sale of 36 US F-15 jets to Qatar is "more of a procedural" move than a "political" one, a U.S. defense analyst told Arab News, adding that defense and security ties between Doha and Washington remain integral to American interests. Al Udeid Air Base is home to more than 11,000 US and coalition troops.
"Just like other countries, like Saudi Arabia, the United Arab Emirates, Egypt.it is natural for Qatar to buy airplanes or parts necessary for its own defense", Cavusoglu said in Kuwait following talks with his Kuwaiti counterpart, according to Turkey's state-run Anadolu news agency.
Cavusoglu, who visited Qatar and Kuwait to try to push diplomatic efforts to resolve the crisis, said on Thursday he intends to travel to Saudi Arabia on Friday for talks with Saudi King Salman bin Abdulaziz about the crisis. "We must lay these out in order to solve this problem", he said.