Boeing Co.is the prime contractor on the fighter jet sale to the Middle East nation; the fighters are made in St. Louis.
ICAO, which was created after the United States invited more than 50 allies to agree to a common air navigation system in 1944, has no policing powers and has to rely on consensus to enforce its will.
During a meeting with Annan in Oslo, Zarif pointed to the pressures imposed on Qatar by Saudi Arabia.
"Qatar has showed the most decisive stance against terrorist organization Daesh alongside Turkey. Victimising Qatar through smear campaigns serves no objective". "The blockade is hindering US military actions in the region and the campaign against ISIS".
This comes after Saudi Arabia, Bahrain, UAE and Egypt cut off ties with Qatar. Leaders pointed to Qatar - look! On June 9, the Saudi Commission for Tourism and National Heritage ordered hotels and other tourist facilities to block "all channels from the Al Jazeera Media Network" and replace them with other channels, threatening to punish violators with a fine of up to US$26,000.
Qatar is also home to the forward headquarters of US Central Command, which leads US military action against IS in Iraq and Syria.
"Secretary of Defence Jim Mattis met today (Wednesday) with Qatari Minister of State for Defence Affairs Khalid al-Attiyah to discuss concluding steps in finalising the Foreign Military Sales purchase of US-manufactured F-15 fighter aircraft by the State of Qatar", Pentagon spokesman Lt. Col. Roger Cabiness told CNN.
The minister, Adel al-Jubeir, defended the Arab powers' move against Qatar as a boycott, not a blockade, adding: "We have allowed the movement of families between the two countries.so that we don't divide families". Kuwait, a neighbour and a member of the Gulf Cooperation Council (GCC), also has been mediating. "It's hard to conduct negotiations if you don't really know what everybody wants".
Turkish Foreign Minister Mevlut Cavusoglu and Economy Minister Nihat Zeybekci will visit Qatar on Wednesday amid regional tensions between Gulf states, the state-run Anadolu Agency reported. Qatar denies the allegations, but its ties to Iran and embrace of various Islamist groups have put the country under intense scrutiny.