TALLINN, Estonia — One spent over five and a half years behind bars in Russia while other, higher-profile detainees were released ahead of him. Another was jailed for only a few months. They include journalists, veteran political activists and those simply opposed to the war in Ukraine. The youngest is 19, the oldest 71.

Among the Russians jailed in the West were alleged sleeper agents who lived double lives. Others were convicted of hacking computers. One was imprisoned for the brazen, daytime shooting death of a man in a Berlin park.