The U.N. Security Council stressed on Thursday that M23 rebels must be stopped from regrouping in Democratic Republic of Congo and expressed concern at Congolese soldiers aiding Rwandan Hutu militia, sparking a verbal clash between the countries' envoys. Rwanda's U.N. ambassador, Eugene Gasana - a temporary member of the 15-member Security Council - accused Congo of "crying like small babies," while his Congolese counterpart, Ignace Gata Mavita wa Lufuta, said Rwanda's "arrogant behavior must stop," Reuters reported. Rwanda has repeatedly intervened in Congo, saying it had to hunt down Hutu militia, the Democratic Forces for the Liberation of Rwanda (FDLR), which fled after Rwanda's 1994 genocide. Congo and Rwanda have fought two wars in two decades in eastern Congo. The U.N. Security Council expressed its concerns about the violence in eastern Congo in a unanimously adopted resolution that renewed an arms embargo and targeted sanctions, including travel bans and asset freezes, on Democratic Republic of Congo. The top U.N. official in Congo, Martin Kobler, has said there were credible reports that the M23 rebels appeared to be regrouping just two months after Congolese troops and U.N. peacekeepers defeated the Tutsi-led insurgency. -- SPA 23:39 LOCAL TIME 20:39 GMT تغريد