This has been building up for a while

https://dontspeaknews.com/2022/02/11/turkey-has-deployed-hundreds-of-isis-fighters-to-donbass-ukraine/

It appears that Turkey is not only sending their suicide drones to Ukraine but now it’s been discovered that they are sending proxy ISIS terrorists to the area to assist Ukraine. Here is more from avia.pro.

Pro-Turkish terrorists from Syria and Libya were found in Donbass.

https://www.americanthinker.com/articles/2015/11/the_ukraineisis_alliance.html

Any arguments that ISIS is helping Ukrainian nationalists fight the Russian backed separatists out of the goodness of its heart, and that ISIS will just pack up and leave Ukraine if a victory is won, strain all measures of credulity. If the Russian separatists lose in eastern Ukraine, Ukraine may very well be on the path to falling under control -- at least partially -- of ISIS, placing ISIS with a state under its control on the borders of several NATO members. Did the West possibly back the wrong horse in Ukraine? Should we instead have supported Russia?

https://www.overtdefense.com/2021/02/15/isis-members-arrested-by-sbu-in-kyiv-ukraine/

An ISIS cell has reportedly been located and apprehended by the Security Service of Ukraine in Kyiv. Supposedly, the leader of the group, an ex-ISIS militant, came to Ukraine in 2019, with forged documents, and organized help for other terrorists from the Middle East.

https://original.antiwar.com/justin/2015/03/05/isis-in-ukraine/

While we’re fighting the Islamic State, a.k.a. ISIS, in Iraq and Syria, and American officials tout the alleged danger of an attack on the US homeland, in Ukraine Washington and the Caliphate are fighting on the same side.

http://www.islamedianalysis.info/is-isis-in-ukraine-yes-and-no/

Is the so-called Islamic State in Iraq and Syria (ISIS)/Islamic State in Iraq and the Levant (ISIL) / Islamic State (IS) / Al-Dawlah Al-Islamiyah fe Al-Iraq wa Al-Sham (DAISH/DAESH) active in post-EuroMaidan Ukraine? The answer is not exact. In other words, the answer is both yes and no.

https://www.independent.co.uk/news/world/europe/isis-leaders-ukraine-tukey-syria-caliphate-al-bara-shishani-a9211676.html

Understood to have held the post of Isis’ deputy minister of war, head of a unit responsible for “special operations” and surveillance, the Georgian-born commander reportedly had a hand in it all: executions of “non-believers”; public beheadings; terror operations abroad.

He also had a reputation for being dead – that is, until last Friday.

Al Bara Shishani’s dramatic reappearance in the dock of a court room in central Kiev was shocking not only for the fact of how alive he was.

As details emerged about his miraculous resurrection – how he dodged what had been reported as a fatal air strike in Syria, then used a fake passport to travel to Turkey and Ukraine, where he would live untroubled for two years – a number of questions came begging about Kiev’s capacity and willingness to deal with terrorists taking shelter within.

According to the SBU, Ukraine’s admittedly unreliable security agency, Al Bara Shishani even continued to coordinate Isis terror operations from Kiev.