The United States recently withdrew aid from Rwanda because of its backing of the M23 rebel military group in the DRC, which is believed to recruit minors.
"The idea that Rwanda is associated with child soldiers is just ludicrous," Foreign Minister Louise Mushikiwabo told the BBC. "We have worked with a number of U.N. agencies ... to basically make sure that children don't belong in the army."
M23, which is led by ethnic Tutsis, is accused of forcing tens of thousands of people from their homes in eastern DRC.
Exploding whale video goes viral on Internet
Jordana Brewster on Paul Walker: 'He was an enormous presence in my life'