I recommend you review your notes regarding the US invasion of Iraq under false circumstances and the impact of that act on a faux country drawn on a map after WWI.
Our invasion of Iraq set up the implosion and Civil War that followed. Bush & Co., aggressively de-Baathistized the country (following the people throwing flowers at our troops), empowered the Shiites (60%+ of the population) and ultimately Al-Maliki. Al-Maliki began a vicious oppression of the non-Kurd Sunnis, the country's former ruling sect--although ~25% of the population.
Baathists and tribal Sunni Sheiks led the rebellion against this oppression. The famed 'surge' was nothing more than the USA bribing Sunni Sheiks to form an alliance with the Shiites (who offered concessions) to fight Al Qaeda In Iraq, the original post invasion Islamic insurgent group.
This effort initially succeeded until Al-Maliki again oppressed the Sunnis. This spawned ISIL, now ISIS, around 2007 - 2008, well before Obama took office. ISIA is comprised of about 30%+ of former senior Baathists and generals who are prominent in that monstrous group.
The USA stayed in Iraq until 2011-12. One reason for pulling out US troops was that they were needed to stabilize Afghanistan. Bush had turned victory in that country to defeat when he allowed Musharraf to give haven to Bin Laden and the Taliban and when he invaded Iraq.
By 2011, no President would've been able to generate popular public support for two multi-front wars in Iraq and Afghanistan.
Iraq was always unwinnable and Afghanistan became a quagmire driven by Bush's obsequious handling of Musharraf and his de-mobilization of our troop presence there.
The truth is that Bush's dishonest invasion of Iraq set off the implosion of Iraq and the entire Middle East, including Syria and Libya and Egypt and Tunisia (the only country still having some form of a 'Republic').
The winners of Bush & Co's hideous crimes have been Iran (now the regional hegemon), Russia (loved by Republicans & Trump), and the extremists.
Bush and Cheney, Rumsfeld, and Mushroom Cloud Condoleeza Rice, Bolton, Wolfowitz, et al, should've been impeached, indicted, and prosecuted.
I'm a YUGE believer in redemption. Sadly, the American People are still waiting for those pompous lying B*tards to apologize.