The best replacement for russian is german.

The best alternatives to russian are rated as following:
★★★★★  german
★★★★  ukrainian
★★  chinese sks
★★  arabic
★★  us military
★★  kayfun
★★  ukrainian language
★★  thousand island
★  russian 91
★  ukraine
★  japanese
★  thousand island dressing
★  polish
★  greek tortoise
★  black russian
★  french
★  german language
  spanish
  georgian
  american military
  french dressing
  white russian
  german easier to learn
  french ballet
  american tanks
  polish vodka
  soviet
  red russian
  polish language
  english alphabet
  american army
  italian
  bulgarian 7.62x54r
  catalina dressing
  caucasian
  french tarragon

Your alternative for russian is not listed? Suggest!
Speaking about russian, one probably shouldn't forget about toil assimil.

Other search terms related to russian and their ratings are:
★★★★★ toil assimil
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