Somini Sengupta: “Lawmakers around the world are debating laws intended to stop citizens from going abroad to fight, and to punish them if they do…France wants more power to block its citizens from leaving the country, while Britain is weighing whether to stop more of its citizens from coming home. Tunisia is debating measures to make it a criminal offense to help jihadist fighters travel to Syria and Iraq, while Russia has outlawed enlisting in armed groups that are “contradictory to Russian policy.”…Recruits from 74 countries are among the estimated 12,000 foreign militants in Syria and Iraq, many of them fighting with ISIS, according to Peter Neumann, a professor at King’s College London, who has culled the figures largely from government sources. The largest blocs of these fighters come from nearby Muslim countries, like Tunisia and Saudi Arabia, but smaller contingents come from countries as far away and disparate as Belgium, China, Russia and the United States. American intelligence officials disclosed this week that there were 15,000 foreign fighters in Iraq and Syria from 80 countries, mostly with ISIS.”