Times are scare and war in eastern Europe is an fact. Orginal SPMBT were create in times when all of us were certain that we have permanent peace ahead so new countries created on ashes of USSR wasn't added for example Belorusia existed just 4 years in that times.
I just start to create OOB for Belorusia because this country is important ally of Russia in that war on Ukraine even if isn't still involved. People's said inside city that when Mr. Lukaszenko will try involve his own army they my swith sides and join to Ukrainian army.
So here you have half backed still not finished OOB which now covers artillery and tanks with their posesion.
They have moustly post USSR equipment but in oob are also new Russian vehicles added recently some build on Chinese license and their own indigineus industry creations.