Because the directors of the Empire like to play to its home crowd in themes of morality, humanitarianism, and rule of law, the twists and turns of their imperial ploys often require rather absurd twists and turns in their propaganda. Then we have Escobar who can smell hypocrisy miles away, and loves to ridicule it wherever he finds it. With directors like those running the Empire, he has no difficulty satisfying his love of ridicule. He feasts on the abundance of hypocritical newspeak that these directors must serve to their home subjects in order to appear as humanitarian cooks.
The Obama administration's unison newspeak is that Khorasan includes former al-Qaeda assets not only from across the Middle East - including al-Qaeda in Iraq and Jabhat al-Nusra - but also Pakistan, as in an ultra-hardcore extension of the Pakistani Taliban.If ridicule is not your "thing", then read a more conventional report by Tony Cartalucci on the same subject. Some will argue that Escobar's article is more effective.
What a mess. Al-Qaeda in Iraq is the embryo of ISIS, which turned into IS. Jabhat al-Nusra is the al-Qaeda franchise in Syria, approved by CEO Ayman al-Zawahiri. Both despise each other, and yet Khorasan holds the merit of bundling Caliph's goons and al-Qaeda goons together. Additionally, for Washington Jabhat al-Nusra tend to qualify as "moderate" jihadis - almost like "our bastards". Too messy? No problem; when in doubt, bomb everybody.