Complex sentence: The Christian Democrat and People's Parties International (also now known popularly as the Christian Democrat International (CDI), or more recently due to secularizing forces the Centrist Democrat International) is the global international political group dedicated to the promotion of Christian Democracy.
Split into simpler sentences: The Christian Democrat International (CDI) was formerly known as the "Christian Democrat and People's Parties International". It is the global international political group dedicated to the promotion of Christian Democracy.