LONDON 

Switzerland has rejected most US requests to use its airspace for military flights to Iran, citing the country’s law of neutrality, according to a report Wednesday.

Between March 5 and 23, the Federal Office of Civil Aviation received 11 applications from the US, of which only four were approved and one was withdrawn, the Swiss news agency Keystone-SDA reported.

The report noted that March 13 saw the highest number of applications, with five requests submitted for flights on March 15. One request from the United Arab Emirates was also rejected.

Since the start of the Iran conflict, FOCA has approved only a third of 12 requests from other countries seeking to fly over Switzerland en route to the Middle East.

The report comes as US President Donald Trump has criticized European countries that refuse air access to American warplanes.

The United States and Israel have been carrying out airstrikes on Iran since Feb. 28, killing more than 1,340 people, according to Iranian authorities. Iran has retaliated with drone and missile strikes targeting Israel, Jordan, Iraq, and Gulf countries hosting US military assets.

The conflict has also driven up energy prices and disrupted shipping through the Strait of Hormuz, through which about 20% of global oil supply passes each day.