The United Nations on Friday reaffirmed its determination to back the African-led International Support Mission in Mali (AFISMA) after a terrorist suicide bombing killed three Chadian members of the force, which is helping national efforts to recover the northern Sahara region of the trouble-wracked country from insurgents.Meanwhile, UN humanitarian officials also warned that food situation in the north of the West African country is alarming, with an international humanitarian aid appeal grossly underfunded.\"The United Nations condemns the bomb attack which has also injured several members of the same contingent serving under the AFISMA Force,\" the UN Office in Mali (UNOM) said in a statement after the attack, which occurred in Kidal in the far northeast of the country.These terrorist acts, however, shall not undermine the United Nations\' determination to support AFISMA in its effort to restore peace and territorial integrity in Mali,\" it added.In his most recent report to the UN Security Council on the situation in Mali last week, UN Secretary-general Ban Ki-moon proposed two options for UN engagement in the country, where renewed fighting since January 2012 has uprooted hundreds of thousands of people and prompted the government to request assistance from France to stop the military advance of extremist groups.Under the first option, a UN multidimensional integrated political presence would operate alongside AFISMA, which the Security Council authorized in December, at the request of the Malian government, to support national efforts to recover the north from the insurgents.The second option involves the establishment of a UN multidimensional integrated stabilization mission. In addition to a political mandate, the mission would carry out security-related stabilization tasks, protect civilians and create the conditions for the provision of humanitarian assistance.Also on Friday, the UN Office for the Coordination of Humanitarian Affairs (OCHA) said that the Central Emergency Response Fund (CERF) has allocated 16 million U.S. dollars over the past few weeks to kick-start life-saving humanitarian projects in Mali.It noted that Mali is at the beginning of the lean season and the food situation in the northern regions of Timbuktu, Gao and Kidal is alarming.The Consolidated Humanitarian Appeal for Mali has only received about a quarter of the 410 million dollars requested. The CERF\'s allocations are therefore critical stop-gap measures pending more substantial funding for the appeal.