I'll be interested to see how that goes with some of the countries tbh.The EU are looking at it but apparently they won't be renewing the AZ contract so maybe that will take it's place alongside Pfizer and Moderna
Lithuania has said that they would refuse it even if it was approved, for example - granted things may change but they don't have the most ideal relationship with Russia at the moment and probably won't for the foreseeable future. I could see some other countries probably refusing to as well, especially as the Russian testing standards don't seem to be great and they haven't been clear/truthful with their infection numbers.
The vaccine mixing is also an odd situation I probably wouldn't accept tbh.