Russia, the United States, Japan and many parts of Europe lost ground last year in its ranking of global press freedoms. The rise of non-state groups, crackdowns on demonstrations, wars and economic crises provided a backdrop for a tough 2014. The Paris-based media watchdog [Reporters Without Borders] said two-thirds of the 180 countries surveyed in its annual World Press Freedom index scored worse than a year earlier. Western Europe, while top-ranked, lost the most ground as a region. Three Nordic countries headed the list, but there was slippage in Italy - where Mafia and other threats weighed on journalists - and Iceland, where the relationship between the media and politicians soured. The U.S. fell three places to 49th amid a "war on information" by the Obama administration. Reporters also faced difficulty covering events like demonstrations in Ferguson, Missouri, where black teen Michael Brown was shot dead in August by a white police officer. Russia dropped two notches to 152nd place after passing "draconian laws" to limit freedom of information, the group said. Legislation allowing access to information helped Mongolia jump 34 spots - the highest single advance - to 54th place. China, Iran and North Korea all remained among the 10 lowest-ranked countries. The group uses seven criteria to calculate its index - measures for media independence, the diversity of opinions expressed, self-censorship, transparency, abuses and the legislative environment.