International Imprisonment & Extradition: Can You Avoid A Foreign Jail Cell?

American WNBA player Brittney Griner was just sentenced to 9 years of jail time by a Russian court.  Is it fair for her, or anybody, to be jailed for the crimes of a country they are visiting, especially when those same actions are not illegal in their home nation?  Alternatively, if you commit a crime in your home country, should other countries, who might not agree with that particular policy, offer you sanctuary?  Or extradite you back to face punishment?