The bombing of the Boston marathon in April and the brutal murder of a British soldier in London have again focused attention on Muslim extremism.
Police investigating the grisly murder of a soldier in London by two radical Islamists have made another arrest.
The extreme reaction of Muslims to anti-Islam film "Innocence of Muslims" comes after years of subjugation and humiliation by Western forces.
Hundreds of people have fled their homes in northeast Nigeria in fear, following deadly all-night gun battles between Islamists and security forces.
A novel about Aisha, the child bride of the Prophet Muhammad, has been withdrawn because its publisher feared possible terrorist acts by extremists.