Today, 04:40 PM
I doubt it would be the cakewalk you envision. And it is not as simple as simply counting beans. Its more a comparison of apples to oranges. Despite its advanced weapons and money, remember Washington’s great war machine lost in Korea and Vietnam. After 16 years, it is losing in Afghanistan. It’s proxy war to overthrow Syria is now all but embers.
Let’s compare some of the differences from Iraq. Iran is more than three and a half times the area of Iraq. And it is far more mountainous and varied terrain. It does not allow for easy fast ground invasion, and more lengthy, risky and difficult air raids. It is far more defensible terrain.
Iran is also more than twice the population of Iraq, and the population is unified. Iran is not the fractured Sunni – Shia – Kurds factions that were in Iraq. Iran is an ancient nation. Iran is not a made up country of artificial borders dreamed up by Western nations squeezing together a mish mash hodge podge of separate nations and varying groups. Washington would not have Shia and Kurd factions rising up to fight the government forces during the invasion. Iran has a population that is overwhelmingly ethnically and religiously homogeneous. Nor would you likely have generals and military so quick to surrender like many of the Baathist of Iraq that had little true loyalty to Saddam. The population would be effectively unified in resisting the invaders.
Also, Iran’s military is not the backwater brigades of the 1980s when Washington instigated and supported Saddam Hussein’s failed invasion of Iran. Since that time their defenses are substantially improved. Plus Iran and other nations have had the past two decades of opportunity to watch study and plan for Washington's military tactics, chain of command, logistics, assault, invasions, weapons, coordination, SOP, in action because Washington has actively been invading, attacking and warring with other nations continuously since that time.
First Washington’s modus operendi of bombing of nations with no effective air defense against Washington’s air superiority would not exist. While Iran has a modest air force of over 450 operational jets and military aircraft, it would not scramble them to go toe to doe with US air force. Over the past twenty years, Iran has hardened, buried and concealed the most valuable military, government and civilian targets. Washington would not simply obliterate all targets in 24 hours. Remember Washington launched the most concentrated bombing raids for 78 days straight against Yugoslavia yet Serbian forces survived virtually unscathed. That is when Washington decided to really up the rain of terror by targeting civilian targets while offering a deal to Milosevic. Basically Washington resorted to openly using terrorism to get the deal it wanted.