As Russia's defense tech sector continues attracting interest from countries across Eastern Europe, the Middle East and Asia, Washington increasingly finds itself in the awkward position of having to threaten and cajole its own regional allies.

Reuters reports of the latest instance: "The United States could impose sanctions on Egypt and block it from future military sales if it goes ahead with a purchase of Russian warplanes, a U.S. official said on Monday."

Last Spring Cairo and Moscow first unveiled an agreement on the sale to Egypt of “more than twenty” Sukhoi Su-35 heavyweight multirole fighters. Image via AIN Online

This after Egypt signed an agreement to purchase more than 20 Su-35 fighter jets from the Kremlin in a $2 billion deal.

The US has previously threatened other countries with sanctions under its Countering America’s Adversaries Through Sanctions Act (CAATSA) for purchases of Russian military equipment (Serbia being the latest, related to rumors that it's mulling S-400 anti-air acquirement).

Cairo eyeing the advanced Russian fighter might be viewed as an especially insulting affront by the Trump administration especially given that as the second largest recipient of foreign aid historically (after Israel), Washington has provided billions in economic and military aid to Egypt over the past years, including its F-16 fighters.

As with other countries that deploy new Russian weapons systems, Turkey foremost on the list, there's concern over the ability to engage in joint exercises with NATO militaries, specifically related to fears of exposure of American and NATO defense tech secrets.

Needless to say a major breach between Egypt and the United States hasn't occurred for decades, as it's not secret that Washington needs to prop up its military 'deep state' for sake of keeping the long term peace agreement with neighboring Israel.

Currently, Saudi Arabia and Qatar are also said to be expressing interest in Russian defense purchases, namely the S-400.