According to John Stevenson:
My research on all 174 of the internationally recognized new states that have emerged since 1900 and scores of mass killings reveals that international involvement to temporarily address the symptoms of the violence—the mass death of civilians—increases the likelihood of greater violence and destruction. That is because cease-fires do nothing to eliminate the root causes of violence against civilians. Instead, both sides use the pause in killing to solicit diplomatic and military aid while planning and preparing their next wave of attacks.
The Dish 