LONDON — The jihadist group at the forefront of Syrian rebel gains on Wednesday pledged allegiance to al-Qaida leader Ayman al-Zawahiri, underscoring the bind U.S. and Western European governments are in even as they move toward broader military support for moderate elements of the Syrian opposition.
U.S. diplomats accompanying Secretary of State John Kerry for talks in London with Syrian opposition leaders played down the announcement that the Nusra Front had announced loyalty to al-Zawahiri, who became the top al-Qaida leader after the death of Osama bin Laden. But the timing of the development — as moderate Syrian leaders were seeking more help from the West — underscores the risks associated with Western nations' plans to offer direct military aid to an amorphous rebel movement.
"The whole crisis in Syria being viewed through the lens of radicalism puts the U.S. in a very difficult position, but I don't think they can just back off," said Leila Hilal, head of the Middle East Task Force for the New America Foundation research institute in Washington and a close monitor of the Syrian conflict. "As long as the U.S. keeps saying it's sending only nonlethal assistance, then I think they can weather this, but it does make it more difficult."
Nusra Front leader Abu Mohamed al-Jawlani made his fealty to al-Zawahiri known Wednesday via an audio recording posted online, according to the Reuters news agency. The message was in response to an announcement Tuesday in which al-Qaida's Iraq branch said it had merged with Nusra into one entity known as the Islamic State of Iraq and the Levant. Al-Jawlani contradicted the claim, saying, "We were not consulted" about such a merger, and he clarified that Nusra's allegiance was to the al-Qaida core in Pakistan.
The State Department in December designated Nusra as part of the al-Qaida in Iraq terrorist group. On Tuesday, France said it would seek talks with fellow European states and at the United Nations on whether they, too, should designate the group as a terrorist organization.
Having the al-Qaida brand on a group with such a visible battlefield presence is largely why the United States and other nations are so skittish about intervening militarily on behalf of the Syrian rebels, who lack a central command and are plagued by divisions between jihadist groups like Nusra and more moderate fighters.
To further complicate matters, the U.S.-supported rebels are locked in a deep rivalry with the political coalition to which they ostensibly report, leaving Western backers with neither a strong counterweight to the extremists nor a unified opposition front with which to negotiate potentially broader military aid.