The foreign ministers for Rwanda and the Democratic Republic of the Congo signed a U.S.-brokered peace deal to end the bloodiest conflict of the 21st century.

The official signing of the peace agreement took place earlier Friday at the State Department and was witnessed by Secretary of State Marco Rubio and Senior Adviser for Africa Massad Boulos, whom Trump has largely credited with bringing about the deal.

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.