The Secretary-General called President Paul Kagame of Rwanda and President Joseph Kabila of the Democratic Republic of the Congo today to discuss the deteriorating humanitarian and security situation in eastern DRC and identify possible steps to resolve the crisis.  The Secretary-General expressed grave concern over reports that the M23 mutineers fighting Government forces in North Kivu are receiving external support and are well-trained, armed and equipped.  Stressing the need to do everything possible to dissuade the M23 from making further advances and to cease fighting immediately, the Secretary-General urged Presidents Kagame and Kabila to pursue dialogue in order to defuse tensions and bring an end to the crisis.