The UN Security Council has imposed sanctions against leaders of the M23 rebel movement in DR Congo.
The sanctions freezes assets of those linked to the group and its allies in Rwanda, and bars them from travel.
The BBC reports the rebels captured Goma on the eastern border with Rwanda - from government and UN troops last month. They later withdrew from the city.
The sanctions were imposed on 31 December, a day before Rwanda joins the Security Council for two years.
The UN and DR Congo government accuse Rwanda and Uganda of backing the rebels, an accusation they strongly deny.
The BBC reports Rwanda is widely seen as having backed armed groups in the east of DR Congo as a way to fight Hutu rebels who fled there after the genocide of the 1990s.