It is not Russia who is dangerous for us, the real threats are coming from Brussels and Washington. Brussels can dictate us laws to implement and Washington can send its troops to the Czech Republic as they both wish. There have already been two occupations by US army in Czech Republic. Russia is unable to do these things.
Czech Republic is a full EU member, fully involved in EU legislative processes, in all EU institutions. There has never been an occupation of Czech territory by US army. The last time Russian troops occupied Czech territory was 1968-1989: bit.ly/1TYZIa1,