>> Russia stood by while everything Russian, including the Russian language which is the native language of millions of Ukrainians, was facing many restrictions

You think Ukrainians shouldn't decide which language to use? Also russian is native for millions of Ukrainians due to ethnic cleansing done by russians for centuries.

Russia never cared about diplomacy and always wanted to regain the ex-USSR territories back.

This has been confirmed by various Russian declarations and maps.

The diplomatic issues are merely an official stance that is presented to convince the gullible. It's on you if you believe it.

You can look at Moldova, Georgia, Romania and Chechnya for other examples of Putin and Russia's imperialistic ambissions.