Both of those groups are US proxies in a way. We are using them at the moment to attack the Iraqi, Syrian, and Afghan governments.
In recent years, US the shipped many ISIS fighters into Iraq after the Iraqi government voted to throw our asses out of that country.
We use both Al Qaeda and ISIS to attack Assad in Syria.
We also help the Saudis and UAE use Al Qaeda and ISIS to attack the Houthis in Yemen.
While the Iraqi government was fighting ISIS a few years back, the US and the UK were doing daily airdrops of weapons to ISIS, mostly in Anbar Province. Local tribal leaders said these were happening every day. They even took their complaints to the Iraqi Parliament. In one case, the British were caught red-handed in a weapons drop to ISIS. The British admitted that they did it, but they said it was an “accident.” So the wonderful Brits are supporting Al Qaeda and ISIS too. Wonderful people.
I am not sure why we were backing ISIS. Keep in mind that at the same time, we were helping the Kurds fight ISIS. So we were attacking and supplying ISIS at the same time. This sort of double-dealing nonsense is classic US Deep State foreign policy. We do this sleazy stuff all the time.
I believe we were backing ISIS because we were angry at the Iraqi government for various reasons. One of the main ones was that they have strong ties to Iran. Israel and sometimes the US have attacked the Iraqi military many times at the border crossing with Syria. In one case, we left 75 casualties. So the US is literally carrying out attacks against the Iraqi Army!
We said the attack was against an “Iranian militia” but there’s no such thing in Iraq. There are pro-Iran Shia militias, sure. But they are made up of Iraqi Shia, not Iranians. And all of those “Iranian militias” are simply battalions in the Iraqi Army. The Iraqi government is pro-Iran. The Iraqi Army in its entirety is pro-Iran.
As the anti-ISIS wars in Iraq and Syria wound down, Afghans started complaining the US helicopters (black helicopters at that) were flying in ISIS fighters and dropping them in Nuristan in Afghanistan. Black helicopters are absolutely real as are “men in black,” often heavily armed in military fatigues. There’s no mystery about these forces. Both the black helicopters and the men in black are US military intelligence. In the US at least, they dress in black.
I have no idea why were dropping ISIS fighters in Afghanistan. It’s a mystery to me. Perhaps we just want all of these wars to go on forever and we wish to keep the region destabilized for as long as possible.