Complex sentence: The UN proposed that its representatives monitor the elections, to which both Ranariddh and Hun Sen agreed, but Hun Sen insisted that Ranariddh be prepared to face court charges, to which Ranariddh responded with a threat to boycott the election.
Split into simpler sentences: The UN proposed that its representatives monitor the elections, to which both Ranariddh and Hun Sen agreed. However, Hun Sen insisted that Ranariddh be prepared to face court charges, to which Ranariddh responded with a threat to boycott the election.