Is Islam now the most rapidly declining religion?

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We are constantly hearing that Islam is the world’s, fastest growing religion. This is obviously just propaganda, because in actual fact Christianity is by far the fastest growing. We know that decent and moderate Muslims are increasingly sickened by the militant face of Islam and the hate filled 'holy war' agenda. This has already resulted in the mass conversion of 2 million Russian Muslims to Christianity, and many other conversions elsewhere, So in the light of this evidence has Islam now become the world’s most rapidly declining religion?