A de facto ceasefire between Congolese forces and Rwandan-backed rebels in the eastern Congo town of Walikale appeared to have broken down on Monday, with the rebels going back on a pledge to withdraw and accusing the army of violating its own commitments.

The leader of the rebels who captured two key cities in eastern Congo tells The Associated Press that international sanctions and Congo’s proposed minerals deal with the United States in search of peace will not stop the fighting.

A de facto ceasefire between Congolese forces and Rwandan-backed M23 rebels in the eastern town of Walikale collapsed on Monday, with the rebels retracting their pledge to withdraw. The rebels accused the army of failing to honour its commitments,