According to the document, the Wolf Unit was led by Abu Yusuf al Turki, the famous Jabhat al Nusra sniper who was killed in the American airstrikes on the compound in Reef Al Muhandaseen. Judging by the names on the list, Four of the fourteen are Turks, two Egyptians, two Yemeni, two Tunisians, one Palestinian, one Serbian, one from the Caucasus.

As to the significance, she writes:

Based on the pictures and documents we can conclude the following: What the Americans call Khorasan, is in fact the Wolf Unit and other groups of foreign fighters within Jabhat al Nusra.

...Pakistan and Afghanistan and are now present inside Syria under the banner of Jabhat Al Nusra According to a source, a total of three buildings in the provenance Reef AlMuhandeseen were targeted: Two villas and one training camp. Seven other Jabhat Al Nusra villas in the area were not bombed. A total of 50 members of Jabhat al Nusra died in the air raids, 200 escaped alive.

In the video accompanying her article, which aired on the news, Moussa shows scenes from a training camp video she found on the internet called "Al Qaida in Syria, The Wolf Snipers." She doesn't give a link, but War in Context found it, and Long War Journal posted a link to it on Sept. 23 (without the reference to "the Wolf Group" that appears in the opening credits, right after "Al Qaida Snipers, Jabhat al Nusra.")

It appears the video was posted originally by al Ribat Media but taken down for violating You Tube's terms of service (even though there is no violence in it.)

Of course, it was no secret that al Zawahiri had sent Pakistani, Afghan and Chechen fighters to Syria to join Jabhat al Nusra. Here's a report from November, 2013. Here a recent Long War Journal report on it.

As to why the U.S. made up the "Khorasan" group name, there are many theories, including this one from Glenn Greenwald, with which War in Context takes issue.

The U.S. has previously identified two of these Khorasan leaders (Mushin al Fadli and Sanafi al Nasr). Al Fadhli and al Nasr are on designated terrorist sanctions lists. They and others have long term involvement in al Qaida and expressed intentions to attack Americans and Europeans. Al Fadhli and al Nasr were reportedly leaders of al Qaida in Iran and the U.S. believes they (and other associates) operated with the agreement of the Iranian Government. Their role in Iran was to raise money and recruit for al Qaida, often using Turkey as a route to Syria. Both al Fahdli and al Nasr allegedly had bomb-making experience. I wrote about this last week and posted a link to a video of a bomb-making class at a camp of Jaish al-Muhajireen wal Ansar (JAMWA) in Aleppo, published by Akhbar Sham in March, 2014. Check at 5 minutes in, there's an explosives making class and they then go plant some outside and blow them up.

Al Fadhli left Iran for Syria in 2013-- see this very interesting Arab Times article about how he trained young recruits to do suicide bomb attacks.

Al-Fadhli lives in north of Syria, where he is in control of al-Qaeda. He entices and recruits jihadists from among the European Muslim youths, or from those who embrace Islam. After choosing the youths, he trains them on how to execute terror operations in the western countries, focusing mostly on means of public transportation such as trains and airplanes. His activities were also focused on directing the al-Qaeda elements to execute operations against four main targets, which are Assad’s military, the Free Syrian Army, the ‘Islamic Front’ and ‘Da’esh’. Sources revealed that Al- Fadhli supports ‘Al-Nusra Front’ against ‘Da’esh’, especially after the Al-Nusra leader Abu Mohammad Al-Joulani declared his loyalty to al- Qaeda group in April last year.

Still unresolved is whether Muhsin al-Fadhli also died in the strike that killed al Turki. As Long War Journal has pointed out , Sanafi al Nasr, who is also prominent in the Khorasan Group posted on Twitter that al Fadlhi was killed in the strike, but he has a history of false reporting deaths, including his own, for strategic reasons. His twitter feed, still active, is here.

As for al Turki, he left Turkey for Syria just two months ago. But he, too, has a long history. He was arrested for a planned suicide attack at a NATO meeting in 2004 which both Tony Blair and George Bush planned to attend in Istanbul. The plan was to kill Bush. At the time he was a member of the al Qaida linked Ansar al Sham terror group. He was ultimately acquitted, but provided this explanation to a news agency: “We hated and cursed the offensive policies of US and Israel.”

These AQ/Nusra fighters now being called Khorasan were tracked for a long time. Their alliances, including with AQAP, were known. The U.S. says there was intelligence information the group was imminently about to launch some kind of bomb attack in the U.S., and it wanted to strike them before it went underground. (See also here.)

In July, 2013, the Pakistani Taliban from the Khorasan region sent fighters to Syria. As I wrote weeks ago, there are so many factions from the Khorasan region, it's hard to keep them straight.

There was this one. A few weeks ago, a splinter group formed named Jamaat-ul-Ahrar TTP (Tehreek-e-Taliban Pakistan, or Movement of the Taliban in Pakistan). On 9/11, according to a news article, Tehrik-e-Taliban Jamaat ul Ahrar sent out a notice saying it was going to fulfill Osama bin Laden's promise. In 2013, the Taliban said a group of Pakistani and Afghan jihadists went to Syria to "monitor Jihad." Then there's this article, which says the Pakistani contingent went to train ISIS fighters. And Reuters says the new group supports ISIS.

While the news of "the Wolf Group" is interesting, and it seems to be the group the U.S. was aiming for in its recent airstrikes, it doesn't seem like it was the only group from the Khorasan region that went to Syria on behalf of al Qaida.

The sniper training was conducted by Abu Yousuf al Turki, who is aligned with the Afghan faction. Did the group also do explosives training, or was that a different fighter faction from the Pakistan area of the Khorasan region, that also worked within Iran? Or did they all operate as one group when they reached Syria? Maybe someone could clear this up. I doubt I'm the only one confused.

Chechens in Syria posts some more videos of the Wolf Unit led by Abu Yousuf al Turki. In this one, posted in August, 2014, Abu Yousuf al Turki explains the Wolf sniper camp, including the costumes (it's not in English so I can't understand what he is saying.) It was filmed by Muhammad Isra, a pro-jihad Turkish blogger/videographer with ties to Jabhat al-Nusra. He writes for the Turkish based website Ummet-i Islam. Here's one of his articles on Abu Yousuf al Turki (use Google translate.)

Here's another video of the camp from May, 2014.

In any event, the name "Khorasan Group" still seems likely to have been coined by Obama and intelligence officials. And we still haven't seen the evidence that the bomb plots the U.S. feared in February, 2014, which were believed to have been guided by AQAP in Yemen, were in the final stages within the past month and an imminent threat. Which leaves the question, were these strikes just more mission creep? They certainly weren't aimed at ISIS. Are we just going to be in a perpetual war against every Islamic extremist group?