As for the assertion that Iraq and other Arab nations have never known any form of republican or democratic system, then how does Putin expect it to work in Russia? Or is he acknowledging that democracy is going to (or already has) fail in Russia. Or are you trying to say that Russian had some form of republican or democratic form of government prior to the 90's? Because all I am aware of is centuries of Czarist absolute rule followed by seven decades of communist dictatorships.
Stop right there. Yes we enforced them and we should have. That is very true. That's not the issue. We are trying to change their culture, they aren't the ones changing it. If they wanted a republican system and believed in it, their soldiers and cops wouldn't run away or switch sides to the militants any time our boys weren't the main combatent. Except for a few die hard units, the cores of which are US expats.
As for Russia, the Russians were experimenting with on and off constitutional monarchy from 1861. True, like the British, they at that time didn't have a written constitution. They did have Zemstovies, which were rural, or regional assemblies and by 1905 they had a Duma. The problem with the Duma, the first 3 Dumas were dominated by the left-liberal Cadets, the Socialists and the Socialist Revolutionaries who didn't come there to work with the government but to try and start a general revolution. The fourth Duma was the opposite. Either way they were working on getting a forumal down. Then came WW1 and the strains that caused the revolutions. Still they had two elections, including one right in the middle of the first year of the Civil War.
Further more, it wasn't NATO soldiers marching in Moscow that removed the Communists, it was the common people who toppled them (backed by the military) and instigated a republican system.
There's the world of difference.