France warned its citizens living or travelling in several Muslim-majority countries to take extra security precautions on Tuesday as anger surged over cartoons of the Prophet Mohammad. In a sign that some countries want to limit the fallout, Saudi Arabia condemned the cartoons but held back from echoing calls by other Muslim states for a boycott of French products or other actions. The row has its roots in a knife attack outside a French school on Oct. 16 in which a man of Chechen origin beheaded Samuel Paty, a teacher who had shown pupils cartoons of Prophet Mohammad in a civics lesson on freedom of speech.