Where does “Варшав” come from?

Варшав (Mongolian) comes from Russian Варша́ва, from Polish Warszawa, from Old Polish Warszewa — Warsaw.

Ancestry of “Варшав”, step by step

StepLanguageWordMeaning
1RussianВарша́ваthe Polish government
2PolishWarszawaWarsaw
3Old PolishWarszewaWarsaw
Every word from Old Polish WarszewaEvery word from Polish WarszawaEvery word from Russian Варша́ва