There are vague allegations of Iran being the "leading state sponsor of terror" on one scale, and then Israel openly doing a genocide and starting wars of aggression and assassinating countless civilian and military leaders on the other scale, with a growing number of American bodies as cannon fodder.

It is up to you to decide where justice lies.

Nah, there's nothing vague around their funding and training of various militaries and militias in the area. There's more than enough war crimes on both sides to go around, and any concept of justice that is predicated on prosecuting one side exclusively is simply bankrupt. If Israeli civilians are fair game because of Israel's war crimes, then American civilians are fair game for the same reason. And I reject any theory of justice that bites that particular bullet.

No one denies that Iran has strategic partnerships in the region. The question comes down to whether you believe armed resistance is ever legitimate or you blanket-dismiss it as "terrorism", in order to justify the territorial encroachment, ethnic cleansing, or mass murder that is brazenly perpetrated by Israel.

Are you blaming Israel for american troops in Iran? Is the US not a sovreign nation anymore?

This is a valid question, and the answer is unfortunately no. There's a lot to unpack there but basically the president is acting unilaterally and in a manner which advance the interests of foreign nations.

He is still the president of the USA. Every American over the age of 18 is responsible for his actions.

Minus 2? If anyone has an explanation as to how war with Iran is to the benefit if the U.S. I'd genuinely like to hear it.

Why does it matter if it is for the benefit of the US? Doing something irrational does not absolve of responsibility.

War? Time will tell, but I'm not hopeful. I have no clue what Trump could have done instead that would work out, but war isn't looking like a good answer (no surprise to me - though I didn't expect it to get this bad so fast)

Iran has been funding a lot of the "attack Israel" groups in the area. When your income depends on hating Israel it is hard to see a more moderate view. In turn this gives the extremists in Israel a better line of why elect them over someone more moderate. (Lets me clear I'm not trying to clear Israel of their crimes here, only suggesting that Iran bares some blame for those crimes).

The above, but applied to other countries and not as extreem. Iran is funding many anti-democracy groups in the region.

Iran has a lot of smart, well educated people - who can't get enough water to drink. If Iran had a better government those people could develop things of use to improve the world, but instead many are stuck as poor despite having the ability to not be.

Changing Iran would not solve all the problems, but it would ease a large share and maybe leave room for a better world. The only question is how to do this - world history doesn't have a good record for changing evil governments.