M23 rebels in DRC pushed out of provincial stronghold 13 (UPI) -- The U.N. peacekeeping mission in the Democratic Republic of Congo pushed rebel forces back to "lick their wounds," a U.N. peacekeeping chief said. The rebel March 23 Movement took control over parts of eastern DRC last year before pulling back under the eye of U.N. peacekeepers. U.S., U.N. and European envoys have been in the region pressing for peace amid renewed rebel fighting. Herve Ladsous, U.N. Undersecretary-General for Peacekeeping, said a DRC peacekeeping unit mandated to use force managed to force M23 away from their strongholds in eastern North Kivu province. "The M23 has suffered casualties and that is the reason why they pushed back to, presumably, lick their wounds," he said in a statement Thursday. [The mission] has firmly strengthened its positions to be in a better position to defend Goma and all the population in and around the area. The U.N. Security Council passed a resolution Thursday calling on all parties to the conflict to fulfill their commitments toward peace "in good faith." Uganda hosted regional delegates last week in an effort to find a political solution to the crisis. M23 is comprised of former Congolese troops who mutinied last year. The United Nations estimates more than 100,000 people in DRC have been displaced by conflict.