So Obama should have cleaned up Georgie W's mess in 6 years, but Georgie W. is excused from creating the mess in the first place due to events which occurred almost a hundred years ago.
By the way, a prominent Republican, George Bush Sr., warned against invading Iraq:
https://www.globalpolicy.org/component/content/article/169-history/36409.html
Given their disagreement, which of the Bushes is an idiot?
No, this is when the West began carving up the Middle East portion of the Ottoman Empire. This occurred at the end of WWI. The Ottoman Empire was dissolved and defeated as a consequence of WWI. So as the old saying goes, "to the victor goes the spoils".
Here's a excerpt from Wikipedia on the origins of modern day Iraq:
"During World War I, the Ottomans sided with Germany and the Central Powers. In the Mesopotamian campaign against the Central Powers, British forces invaded the country and initially suffered a major defeat at the hands of the Turkish army during the Siege of Kut (1915–1916). However, subsequent to this the British began to gain the upper hand, and were further aided by the support of local Arabs and Assyrians. In 1916, the British and French made a plan for the post-war division of Western Asia under the Sykes-Picot Agreement.[31] British forces regrouped and captured Baghdad in 1917, and defeated the Ottomans. An armistice was signed in 1918.
During World War I the Ottomans were defeated and driven from much of the area by the United Kingdom during the dissolution of the Ottoman Empire. The British lost 92,000 soldiers in the Mesopotamian campaign. Ottoman losses are unknown but the British captured a total of 45,000 prisoners of war. By the end of 1918 the British had deployed 410,000 men in the area, of which 112,000 were combat troops.
This is when the French & the British began setting up things the way they "thought" they should be, granting rights to some and taking away other's land and rights. Bottom line is that much of what is a disaster today occurred as a result of WWI.