The below is attributable to Spokesperson Matthew Miller:
Secretary of State Antony J. Blinken had a productive call today with Rwandan President Paul Kagame. The two discussed the volatile situation along the border between Rwanda and the Democratic Republic of Congo (DRC). Secretary Blinken updated President Kagame on the recent visit of Acting Deputy Secretary Nuland to Kinshasa to meet with President Felix Tshisekedi. The Secretary relayed U.S. advocacy for a diplomatic solution to the tensions between the two countries and request for each side to take measures to de-escalate the situation.
Official news published at https://www.state.gov/secretary-blinkens-call-with-rwandan-president-kagame-2/