maybe u could see if some people from yr church want to join in to help meet and greet them, maybe even join with them on the trip. it could be one person bringing them from the station / airport and then someone else cooking them a welcome dinner for example.
that would be nice.
check out they are legitimate first, and not just trying to get an invitation and then disappear to work on the black market. if u correspond with them first for a few weeks and discuss spiritual things, and pray about it, then u should get an idea of what they are hoping to achieve with their visit.
you could even end up paying a return visit to belorus (not sure of the spelling in english), which i have heard is very pretty.
someone i know had a friend from an african country, and made a few visits, then within 10 years had set up a whole collaborative group which helped to restart the country's medical schools in a post conflict situation.
big things can arise from small friendships...