The Russian air force has ordered that most of its SU-25 ground attack aircraft be upgraded to the Su-25SM3 standard that was developed in 2012 in an effort to match the capabilities of the American A-10C a recent (2005) upgrade to the 1970s A-10 design
For the Air Force, finding a way to permanently keep fighters at Kadena Air Base will require some balancing and negotiation with lawmakers and the DoD.