Rwanda and the Democratic Republic of Congo signed a peace agreement Friday in Washington to end fighting that has killed thousands, with the two countries pledging to pull back support for guerrillas — and President Donald Trump boasting of securing mineral wealth.

"Today, the violence and destruction comes to an end, and the entire region begins a new chapter of hope and opportunity," Trump said as he welcomed the foreign ministers to the White House. "This is a wonderful day."

The agreement comes after the M23, an ethnic Tutsi rebel force linked to Rwanda, sprinted across the mineral-rich east of the DRC earlier this year, seizing vast territory including the key city of Goma.