The Democratic Republic of Congo and Rwanda have signed a peace deal facilitated by the U.S. to help end the decades-long, deadly fighting in eastern Congo.

President Trump claims credit for the outcome. The main question now is how the treaty will be implemented as fighting still rages in eastern Congo.

Just hours before the deal was signed, one of them, the Codeco militia, attacked a displaced persons camp in Ituri province, killing 10 people. Keeping these non-state actors in line will be a tall order.