refugee camp in the nearby Swabi district last week . The Pakistani government has been working with international aid agencies to establish camps for refugees , where tents , food , water and basic medical services are provided . But the scale and speed of the displacement -- said to be the worst since the Rwandan genocide in 1994 -- have overwhelmed aid workers , Guterres said . `` The scale of the problem is such that all our resources combined can not cope with it . And it 's very important for this population not to feel abandoned , '' Guterres said . `` Without massive support of the international community for the Pakistani people , this will become a very dramatic problem , and not only a humanitarian problem . '' On Tuesday , U.S. Secretary of State Hillary Clinton announced $ 110 million in humanitarian aid for Pakistani refugees . She also unveiled a system that lets Americans donate to the U.N. refugee effort , by sending a text message on mobile phone , including the word `` Swat . '' Meanwhile , Pakistan 's military said it was continuing the assault on Taliban militants . Pakistani
ISLAMABAD , Pakistan -LRB- CNN -RRB- -- Hundreds of refugees on Wednesday blocked a main road in northwest Pakistan , to protest living conditions for some of the 1.5 million Pakistanis forced to flee their homes in the past three weeks . The refugee situation in Pakistan could be a bigger threat than fighting with Taliban , U.N. says . `` The government has been making big promises , but none of those were ever fulfilled , '' said Hazrat Bilal , a protester and refugee whose family has taken up temporary residence in a primary school . The refugees had blocked the main road in Pakistan 's Mardan district since 8 a.m. Wednesday , Bilal said by telephone . The demonstrators were demanding food , water and other government services , he said . Mardan is a main transit point for the large numbers of Pakistanis fleeing the Swat Valley , the site of fierce fighting between Taliban militants and Pakistani soldiers . The first pictures from the fighting '' The refugee crisis could pose a bigger threat to stability in Pakistan than the war itself , U.N. High Commissioner for Refugees Antonio Guterres told CNN while touring a