Congo’s leader has called on young people to enlist in the army to help fight Rwanda-backed rebels attempting to seize more territory in the country’s conflict-battered east.

Rwandan President Paul Kagame blasted criticism of his country's role in eastern Democratic Republic of Congo where rebels his government backs have seized its largest city, saying Kigali is prepared for "confrontation" if necessary.

Congolese security forces on Tuesday tried to slow the advance of Rwanda-backed M23 rebels who say they have captured Goma after