By kidnapping diplomats, Russia should be considered a rogue nation like Iran.

For centuries, nations have respected diplomatic immunity.  Russia has rejected this civilized norm and has started kidnapping diplomats. If the Vienna Document inspectors are not immediately released the U.S. should close its own embassy in Moscow plus its outlying consular offices and expel the the entire Russian delegation from U.S. soil.  The U.N. ambassador should be permitted to stay but subject to close supervision allowed only to travel to the U.N. from an apartment near the U.N.  But all Russian consulates and its Embassy in Washington should be closed.