Islam the fastest growing religion is a B u l s h i t jihad propaganda, at least in Russia.

Two Million Ethnic Muslims Convert From Islam To Russian Orthodox Christianity

According to reports in the last 20 years in Russia, 2,000,000 ethnic Muslims people have left Islam since the fall of the Soviet Union in 1990s. In the same period it is believe only 2,000 to 5,000 ethnic Russians converted to Islam.

While various Muslim sources claim that Islam is the fastest growing religion in Russia and that ethnic Russians are converting to Islam in large numbers, Roman Silantyev, the executive secretary of the Interreligious Council of Russia denounces this as a myth.

Silantyev states that in recent years more than two million people from various ethnic Muslim backgrounds including Tatar, Azeri, Ingush, Kazakh, etc. have converted from Islam to Orthodox Christianity in Russia, while the number of ethnic Russians who have converted to Islam is between two thousand and five thousand.
http://muslimeurope.com/2-million-ethnic-muslims-convert-from-islam-to-russian-o...