ISIS was doing business of oil with Turkey and Assad
https://www.bbc.com/news/world-europe-35415956
probably less than Assad but still did
The United States Ambassador to Turkey, John Bass said that there is no evidence that Turkey buys oil from ISIS
http://www.israelnationalnews.com/News/News.aspx/207225
CIA apologises to Turkey over ‘false claims’ of links to ISIS
https://www.middleeastmonitor.com/2...o-turkey-over-false-claims-of-links-to-daesh/
Israel buys most oil smuggled from ISIS territory
https://en.globes.co.il/en/article-...muggled-from-isis-territory-report-1001084873
https://www.richardsilverstein.com/2018/05/17/israels-once-bought-oil-from-isis-now-it-secretly-buys-oil-from-libyan-dictator/
Major fights against ISIS is not Turkey:
in Syria it is YPG and Syrian forces along Russia and of course US help and some European
in Iraq major help is US support along wiht the sacrifices of the Iraqi army along with a part of the militias (PMF)
I am saying again Turkey blocked 50.000+ foreign Fighters to join ISIS to fight in Syria
and Turkey is only country to fight ISIS with ground forces ,, not the US , not the UK , not France or not Germany
Turkish Army killed over 3.000 ISIS terrorists in Syria ,,,, and fake ISIS illusion is over
on the other hand terrorist YPG invaded 30% of Syrian territory under the mask of fighting ISIS , in reality the US transfered thousands of ISIS terrorists from Raqqa to Sinai/Egypt
both YPG and ISIS are under the US control to use them like pawns for American/Israeli interests
much more against YPG than ISIS, even if i understand why you consider them terrorists
still they were very helpful against ISIS
Turkish Army took Jarablus,Azaz,Dabıq,Rai and Al Bab from ISIS
Turkish Army took Afrin from YPG
YPG = PKK who killed over 40.000 innocent people including childs and women in Turkey since 1985
and YPG attacked TURKEY more than 700 times
even the US very well knows that YPG = PKK and they are terrorists
as of 2019 , over 300.000 Syrian refugees returned to their lands in Turkish Army controlled areas in Syria
http://www.arabnews.com/node/1424431/middle-east