For five grim years, from approximately 2003 to 2008, Iraq faced the greatest onslaught of terrorism in the history of any state. Many of the worst attacks were perpetrated by suicide bombers, often driving vehicles packed with explosives. By mid-2008, suicide bombers had killed at least 10,000 Iraqis. A disproportionate share of those suicide bombers were foreign Sunnis who arrived in Iraq via Syria. The U.S. government remonstrated with the Assad regime to stop the flow of the fanatics, but Bashar al-Assad consistently played dumb. If the U.S. could not control its border with Mexico, the Syrians disingenuously argued, how could they control their border with Iraq? This ignored the rather major difference that Syria is a police state. The networks that recruited, organized, and passed on the suicide bombers could not have operated without the knowledge of the regime’s all-pervasive secret police. Assad and his cronies were not jihadist fanatics, but they were willing to make use of jihadist fanatics to inflict harm on American interests in Iraq–even if the overwhelming majority of victims were Iraqis, not Americans.

Fast forward to today. Now comes news that Syrian Defense Minister Daoud Rajha and Deputy Military Chief of Staff Asef Shawkat (who is also the president’s brother-in-law) have been slain by a suicide bomber in the heart of Damascus. The interior minister–the man in charge of the notorious secret police–was also wounded but is said to be alive. Quite possibly the bomber, who was rumored to be a bodyguard, was connected to the very organization that Syria once did so much to help–al-Qaeda in Iraq. It is hard not to see some element of cosmic justice here: what goes around comes around, ye reap what ye sow, if you play with fire, and all that. It is certainly a sign the Assad regime is getting ever more embattled, and the civil war many had warned would come if the U.S. provided arms to the rebel fighters has arrived anyway.

But while the victims–the men who directed the military forces that have killed upwards of 17,000 Syrians since the start of the fighting–undoubtedly deserved their fate, it is hard to take much satisfaction in the manner of their demise. For suicide bombing is never the weapon of the moderate. As a terrorist tactic it was occasionally utilized by the Socialist Revolutionary Combat Organization in early 20th-century Russia but really came into its own with Hezbollah in Lebanon in the 1980s, before being picked up by al-Qaeda and its offshoots. While the willingness of ordinary soldiers to sacrifice their lives to win a battle is universally respected (think of the Spartans at Thermopylae) that is a very different thing from deliberately setting out to kill one’s self and take as many of the enemy with you as possible. Americans were appalled at the kamikaze tactics employed by the Japanese at the end of Word War II and rightly so: fighting in this way bespeaks a fanaticism that does not bode well for the future unless it is rooted out.

So now in Syria there is a great danger that America’s hesitancy to get involved on the rebel side has ceded the momentum to jihadist suicide bombers. They by no means represent the mainstream of Syrian opposition. But they will increasingly gain the upper hand, quite possibly with Saudi and Qatari help, unless the U.S. does more to help the secularists and moderates. And that, in turn, means the Obama administration will have to stop waiting for the blessing of the UN and Moscow before getting more involved. Only greater American-led intervention can end the fighting and stop Syria’s descent into greater barbarism.