The United Nations chief denounces the 'systematic' looting of humanitarian aid in Gaza after Hamas authorities target looters in a security operation. The UN warns that the looting is hindering aid operations and endangering the lives of staff. Aid distribution in Gaza is complicated by shortages of fuel, war-damaged roads, and fighting in densely populated areas. Almost half of the aid that enters Gaza is looted, according to humanitarian officials. The Washington Post reports that some of the looting gangs are receiving 'passive if not active benevolence' from the Israel Defense Forces.