Equestria needs a military.
With their armed forces mostly consisting of the Royal Guard and some reserve units, all of whose equipment is centuries outdated, Celestia begins searching for a supplier of modern weapons.
Russia is more than willing to provide a few examples of old hardware if Equestria will just comply with a few little demands...
In the meantime, the Wonderbolts, now the 122nd Combat and Demonstration Squadron, head of the newly-formed Equestrian Royal Air Force, get some fancy new toys; a squadron of Su-33 Flanker-Ds, some Hind helicopters, a pair of T-64 main battle tanks, and all the AK-47s they could need.
Of course, the United States isn't very happy with this.
Inspired by me being bored waiting for Ace Combat 7 to come out.
Updates Sporadically.
Credit to Calm Wind for some characters. Go check him out.