Most Africans believe their politicians can commit crimes such as stealing and mismanagement with impunity, according to a survey released on Wednesday of 22 of the continent's natural resource-producing countries. Despite attempts to improve governance and transparency in the natural resources sector, a majority said it was difficult to find out how their government was using money from sectors such as mining and oil production. "The two streams of perception create interesting challenges for governments trying to negotiate with foreign companies for the best mineral and petroleum extraction deals while maintaining transparency and accountability," the survey, by Afrobarometer, said.