The UN says Sudan is at a ‘breaking point.’ Its military hasn’t committed to peace talks this week

War-wrecked Sudan ‘s humanitarian crisis is at “a catastrophic breaking point” amid fighting and devastating flooding, the U.N. migration agency said Monday, ahead of peace talks planned for later this week.

The talks face uncertainty as Sudan’s military has yet to confirm its participation in the meeting in Switzerland brokered by the United States and Saudi Arabia.

The northeastern African nation plunged into chaos in April last year when tensions between the military and a notorious paramilitary group, the Rapid Support Forces, turned into open fighting in the capital, Khartoum, before spreading across the country. The western region of Darfur has seen some of the most devastating bouts of fighting.