invading Iran and toppling the regime is easy. What cames next is unpredicatble ? Look no further than Iraq
A conflict against Iran simply will not play out the way the way you think it would.
Your pre-emptive strike would be suicide and result in a total war. the resulting retaliation would be end of the Iranian state
There really isn't any sort of data to back up the notion that an American attack on Iran would be the "end" of the Iranian state lol. Why so many think it's okay to say this as if it's some sort of educated rebuttal is beyond me....All we hear, incessantly mind you, is how America would just 'win' a war against Iran just
cause'. This isn't a scenario where the United States would be able to walk away unscathed let alone OPERATE in ideal conditions.
The real-world military threat Iranian precision munitions pose to U.S. military operational capabilities is a deadly one. America over relies on air-power to achieve its strategic and tactical goals. But when that capability is taken away, their military efficacy within the theatre of war is
dramatically reduced. This would allow Iran and allies to operate under a regime that sees America on the back-foot due to inadequate air-support.
What we NEED to acknowledge here is that the U.S. armed forces and America as a whole is not operating in a vacuum against Iran and its allies. America cannot just get into an open-ended war with Iran without sacrificing other international goals. Further more, as stated numerous times in the past, such a war with Iran would spell utter disaster for American military infrastructure in the region. All large U.S. operated air-bases and relevant instillations would be OBLITERATED IN FULL within the first weeks to months of the conflict. Destruction at this level cannot be repaired quickly at all. Iranian missile doctrine, methodology and operational modus-operandi is meant to work under constant attack from the weapons America will employ. Iran's overall strategy is survivable and would be able to withstand initial American air and sea launched munitions.
Iran's underground missile bases, mountain missile infrastructures, buried tactical missiles, drones, regional allies/proxies, drone power, cruise missile inventory, coastal Anti-ship defenses, world-class air-defenses, Navy (focus on submarines) would drag America into a LONG resource intensive war.
It's the equation that must be looked at here rather than who would 'win' or outright 'lose'. The U.S. doesn't want to fight a long winded war with Iran, we know this. But at the same a short high intensity conflict could go either way as Iran has enough raw firepower (that's reliable and battle proven) to inflict an unfavorable win:loss ratio on American forces in the region. This is what we know has, thus far, deterred America from launching even more aggressive attacks on Iran proper.
If you choose to believe that America will win then fine, that is your prerogative. But don't be surprised when Iran kills/wounds well in excess of 20-30,000 thousand U.S. service members and untold billions of dollars in damage to military and civilian resource infrastructure if a war went down.
Iran is not and will never be comparable to 91' Saddam's Iraq...