H/T to Per Christum
The Canons Regular of Jesus the Lord are working in Russia's Far East to support and build up the Catholic Church there. So far there are only three of them and they receive no support from the Office of the Propagation of the Faith since Russia is not considered mission territory, in deference to the Russian Orthodox Church.
One of their major goals is to restore the cathedral in Vladivostok. After 65 years under Soviet control as a state archives, it needs work restore it to the beautiful house of God that it once was and can be again.
They depend upon donations from the faithful since Russia is not considering mission territory.
Donations page is here.