Why Russia won't Fly People to Mars anytime soon

When do you think Russia will send people to Mars? Let me know in the comments!
Sources
https://www.sciencealert.com/russia-has-a-crazy-plan-to-fly-to-mars-in-45-days-using-nukes
http://www.astronautix.com/r/russianmarsuclearthermal.html

Specific Impulse
https://www.qrg.northwestern.edu/projects/vss/docs/propulsion/3-how-you-calculate-specific-impulse.html
Intro: (0:00)
What is Russia's Plans for flying to Mars: (0:34)
Outro: (3:50)

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