The brutal attack on the offices of the French satirical weekly magazine Charlie Hebdo that left 12 dead Wednesday could force insurance companies and governments to reassess their perceptions of the scale and reach of terrorist groups. While two brothers armed with Kalashnikovs who stormed the magazine’s offices shouted that they belonged to Al Qaeda, that link is yet to be ascertained. “ insurers and governments that provide reinsurance in terrorist attacks in how they approach and think about the risks associated,” said Robert Meyer , Wharton marketing professor and co-director of the school’s Risk Management and Decision Processes Center .  Hugh Carnegy, executive editor of the Financial Times in London and former Paris bureau chief for the paper, said Paris has seen several terrorist incidents in recent years, but they have been mostly one-off attacks and on a smaller scale than that on Charlie Hebdo’s offices, which culminated in police on Friday killing the two brothers suspected of the…