Complex sentence: This was evident at the first meeting of the Cominform in 1947, where the Yugoslav representatives were the most strident critics of the national Communist parties viewed to be insufficiently devoted to the cause, specifically the Italian and French parties for engaging in coalition politics.
Split into simpler sentences: This was evident at the first meeting of the Cominform in 1947. The Yugoslav representatives were the most strident critics of communists parties that were held to be insufficiently devoted to the cause, specifically the Italian and French parties for engaging in coalition politics.