Uzbekistan has been discussed as the most likely contender to accept some sort of U.S. military presence, even as Tashkent consistently denies the possibility.
A dispute over whether or not Azerbaijan had expanded its military presence on the border further has sharpened a longstanding dispute between the two sides.
The two adversaries have been choosing not to use one another’s air space. Now Armenians are asking why their government is allowing Azerbaijani overflights.