US is
THE military superpower in present world,at least in the conventional sense.No other country even comes close.Not even Russia or China.
Nor does Iran.But they don't need to either. They are after all experts at asymmetric warfare.
I'll try to highlight Iran's ability, or the lack thereof in some cases.I probably don't know much like most of you guys so I'd be happy to be corrected in anything I got wrong.
@jaibi
Air force : This is where Iran is the most weakest. Some vintage 4th generation fighters does not a good airforce make.It's laughable to even imagine them squaring up against the fighters of USAF or other regional airforces like IsraelI Air Force or KSA Air Force.IMO in case of a war, Iran will rely on it's sophisticated air defence systems like Khordad, Bavar 373 etc. to protect it's sky.
Situation might change in the future after arms embargo is lifted & Iran starts procuring modern 4+ gen fighters.
Navy : While not as weak as the airforce,the navy is by no means can be called strong.Nor does it need to be.Use of fast attack missile boats & dozens of the mini submarines in their disposal, they can easily transform the Persian gulf into a deathtrap.If their ASBMs work as advertised, even the US carrier battlegroups will be hesistant to approach Iranian waters.
Also, they're apparently planning to build large warships & submarines in the future. Will be interesting to see how that pans out.
Army : Arguably much stronger than their counterparts in the sea & air.With more or less half a million troops, I think it's the largest standing army in the region.That's leaving aside the hundreds of thousands trained volunteers & proxy groups in the region.
Although not as modern, they still have thousands of tanks & constantly upgrading them.I'm especially curious about the Karrar MBT,allegedly similar to T90s.They also have multitudes of armed vehicles,artillery pieces & anti tank weapon systems,rocket systems, tactical missile systems numbering in the thousands.
Missile & UAVs : These are the great equalizers.Iran is THE best in missile & drone technology in the region.No other country comes even close.
Not only are they surprisingly accurate, Iran also has hundreds of them.Many in underground so can't be taken out in a surprise strikes.I'm sure most of us here knows about Iranian Missile capabilities.As for their drone capabilities, we have seen it in the KSA oil refinery attacks.
Most importantly, they're virtually self sufficient in producing many of these systems.
Another strong point of Iran is it's proxies which allows them to keep their regional adversaries on their toes.Groups like Hizbullah, Hamas, PMU etc.
Also, something that usually often get ignored is the Iranian nation's ability to take punishment.