WASHINGTON -- Foreign Islamist extremists are streaming into Syria, apparently in response to the Shiite militant group Hezbollahs more visible backing of Syrian President Bashar Assad, a development that analysts say is likely to lead to a major power struggle between foreign jihadists and Syrian rebels should the regime collapse.
Researchers who monitor the conflict said this week that theyve detected the influx of foreigners in firsthand observations on the battlefield, spotting them in rebel videos posted on the Internet, observing a recent spike in reported deaths of foreign fighters and studying their postings on social media sites.
And while many foreign fighters have been absorbed into established Syrian rebel groups, there are signs now that an increasing number are remaining in free-standing units that operate independently and are willing to clash with other rebels and Syrian communities to implement their own rigid vision of Islamist governance.
The numbers are increasing, with more radical groups inside now, said Salman Shaikh, director of the Brookings Institutions Doha Center in Qatar.
Elizabeth OBagy, an analyst at the Institute for the Study of War who just returned from a two-week research trip to study rebels inside Syria, said that without a doubt she saw far more foreign fighters than on her previous trip two months ago, including foreigner-only fighting groups in northern Idlib province, near the border with Turkey.
There were substantial groups of foreign fighters that we came across, way more than I remembered, OBagy said. And we heard a lot of commanders complaining about foreign fighters coming in and not working with other opposition groups.
Examples of those conflicts appear to be more frequent.
On Friday, the Syrian Observatory for Human Rights, a pro-opposition research center in London, posted a video from Aleppo on its Facebook that purportedly shows members of the Nusra Front, a fighting group manned in large part by non-Syrians, replacing a Syrian revolutionary flag with the black flag associated with their al Qaida-aligned movement. The Observatory noted that local civil activists have voiced much anger as a result.
Another illustration of jihadists pushing boundaries, OBagy said, was the attempt to rebuild a working courts system in a town in northern Idlib. After negotiations, she said, local administrators and Syrian rebels had agreed that ordinary criminal matters would pass through the civilian court system, while the rebel brigades would deal with regime defectors and other war-related cases.
The project exactly the kind of nascent governance the U.S. and other powers want to see in opposition-run territories was undermined when a group of foreign jihadists came to town and took over justice matters, trying suspects based on their own strict interpretation of Islamic law, or Shariah.
Theyd spent quite some time writing up agreements and then these foreign fighters came and disrupted it. They were going with Shariah and undermining the division of labor, OBagy said.
Even more ominous was how OBagy said the villagers wanted to resolve the problem: Give us weapons.
While foreign combatants have long been a fixture of the Syrian conflict, analysts said they expected the Sunni Muslim influx to grow in reaction to the Shiite Muslim group Hezbollahs bigger role in shoring up President Bashar Assads forces. In May, Hezbollah leader Hassan Nasrallah pledged tens of thousands of fighters to defend Assads regime. Those fighters were considered crucial in the two-week-long battle over the strategic town of Qusayr, which fell to Hezbollah and Syrian government forces this week after more than a year in rebel hands.
Nasrallahs justification for joining the war made mention of all the foreign jihadists whod poured into Syria to fight for the rebels an uncomfortable truth for the Obama administration as it struggles to come up with a Syria policy that bolsters moderates while isolating extremists.
Latest figures from the Syrian Observatory for Human Rights, which is generally regarded as the most authoritative recorder of Syrian casualty figures, showed that 2,219 foreigners have been killed fighting on the rebels behalf since the conflict began. Thats more than the 1,965 dead who were identified as defectors from the Syrian army.
Meanwhile, Hezbollahs involvement was considered a foreign interference, Nasrallah scoffed in his speech last month.
Immediately after Nasrallahs speech, Sunni clerics across the region issued a chorus of sectarian-tinged calls for men to head to Syria to help their Sunni brethren against the Shiite Party of Satan a play on Hezbollahs name, which means Party of God and Assads minority Alawite sect.
The most prominent was Sheikh Youssef al Qaradawi, a Qatar-based cleric with a millions-strong following and close ties to the Muslim Brotherhood. News reports quoted him as telling a rally in Doha that every Muslim trained to fight and capable of doing that should make himself available for jihad against Assad and Hezbollah.
I wouldnt be surprised if well see higher flows, especially after the statement of Qaradawi, said Aaron Zelin, who researches militants for the Washington Institute for Near East Policy and blogs about them at Jihadology.net. Hes a pretty popular mainstream cleric in the region. Hes not fringe, hes got weight behind him.
Charles Lister, an analyst at the Terrorism and Insurgency Center of IHS Janes, a defense research firm, said at least eight other clerics have issued similar appeals, and the impact can already be seen. Lister, who closely watches jihadist forums, said hes noticed an unusual spike in the number of deaths of foreign fighters; six were reported on just one day earlier this week.
That makes it likely theres been an increase, he said.
Lister said his research shows that the majority of foreigners are still fighting in tandem with the rebels rather than branching out on their own, but he added that trends could change as more Sunni volunteers cross into Syria to fight in whats rapidly becoming a truly sectarian war.
This is just the start, Lister said.