Restricted:
This includes countries where government sanctioned circumstances or anti Christian laws lead to Christians being harassed, imprisoned, killed, or deprived of possessions or liberties because of their witness. Also included are countries where government policy or practice prevents Christians from obtaining Bibles or other Christian literature.
Hostile:
this includes nations or large areas of nations where governments consistently attempt to provide protection for the Christian population but where Christians are routinely persecuted by family, friends, neighbors or political groups because of their witness.
Monitored:
These are areas being closely monitored by VOM because of a trend toward increased persecution of Christians. The frequency and severity of persecution do not currently meet the criteria of the Hostile category.
*Click pic to enlarge

Restricted:
Morocco
Algeria
Tunisia
Libya
Egypt
Sudan
Eritrea
Somalia
Comoros
Monitored:
Ivory Coast
Liberia
Sierra Leona
Senegal
Djibouti
Kenya
Tanzania
Hostile:
Mali
Nigeria
Ethiopia
Zanzibar (Tanzania)
More info...