Complex sentence: Since social or political instability (or perceived instability) would pose a threat to the economic partnership, the EU would contribute to a counter-insurgency project, which would contradict Prodesis' emphasis on participative democracy.
Split into simpler sentences: Since social or political instability (or perceived instability) would pose a threat to the economic partnership, the EU would contribute to a counter-insurgency project. This would contradict Prodesis' emphasis on participative democracy.