Complex sentence: The new Portuguese government tried to mediate an understanding between the three competing movements, and succeeded in agreeing, on paper, to form a common government, but in the end none of the African parties respected the commitments made, and military force resolved the issue.
Split into simpler sentences: The new Portuguese government tried to mediate an understanding between the three competing movements, and succeeded in agreeing, on paper, in forming a common government. But in the end none of the African parties respected the commitments made, and military force resolved the issue.