Complex sentence: The MLPN announced its formation following the Sino-Soviet split, claiming to represent the principles of Maoist communism against the "heresies" of the official (pro-USSR) Communist Party of the Netherlands.
Split into simpler sentences: The MLPN announced its formation following the Sino-Soviet split. It claimed to represent the principles of Maoist communism against the "heresies" of the official pro-USSR Communist Party of the Netherlands.