According to the report, the M23 fighters held children at Tshanzu camp for training and forced labour and selected some for guard duty and to beat other detainees.
Uganda has reported 19 confirmed cases and two deaths.
Save the Children called for more flexible resources to meet the needs of displaced communities in South Sudan.
Provincial commissioner, Tommy Mthombeni, told journalists that no arrest had been made and the motive for the attack had yet been known.
Mr Kagame said several other countries also failed to respond to the genocide.
The Russia-owned nuclear group signed a roadmap with Rwanda to establish Russian-Rwanda cooperation in the peaceful uses of atomic energy.
A report showed that telecom-related calls accounted for 35 per cent of spam traffic in the country.
The Coalition for Epidemic Preparedness Innovations awarded $1.9 million to accelerate the development of a vaccine candidate against the Bundibugyo ebolavirus.
The survey showed that nearly half of the respondents described their living circumstances as bad, while the majority said they or family members went without basic necessities.
The event will examine digital transformation, artificial intelligence, healthcare innovation and investment opportunities.
