I know all too well about the persecution in Egypt, I know some Coptics who came here more or less as refugees. It's a pretty sad story.
Since ISIS took over Iraq, the Bishop of the Iraqi Church announced a state of emergency and has setup a temporary jurisdiction in Chicago where many of the Iraqi Christians have settled here in the US.
The Maronites on the Lebanese-Syrian border also have suffered quite a bit from ISIS as well. Many of the border churches have been destroyed and they are pulling people out of their homes with a convert or die attitude. Coptics were converted by Mark the Evangelist and have been in and out of union with Rome for many years (both the Catholic and Orthodox Sects).
The Marionites were converted by Paul on his way to Rome and have always been favored with Rome but at one point in 6-700ad completely lost contact with all other Christian Churches; the fled to the mountains of lebanon and lived their for centuries until the were found by the Crusaders who then opened a communications pipeline back to the other Churches. We have Maronite communities all over the US.
At the end of the day they're really good people, and when people wonder if "Ancient Christians" still exist, these are the people that can validate that they really do exist and what their beliefs are.