Iran has a strong nuclear weapon development program. Negotiations could not halt it - they stall negotiations and continue development. So if they continue development during negotiations, why shouldn't the US continue her own parallel military route?
As for delivery, Iran does have missiles capable of launching a nuclear weapon at American assets in the Middle East, or American allies. Or even to just float it over on a ship.
Negotiations did halt it. Then Trump went back on the deal.
There's reports Iran agreed to limit themselves to only medical grade centrifuges as recently as last week.
And no, Iran does not have weapons capability to reach the US, period.
They fundamentally did not pose an imminent threat to the United States. A threat to American strategic goals is not an imminent threat to the American people.
Negotiations halted Iran's nuclear program for, as per words of the treaty, "10 to 15 years". That was in 2016. If that treaty were not torn up, then Iran would be allowed to unveil their nuclear weapon in January 16, 2026. Yes, two months ago.
Is your claim that the deal was not preventing Iran from developing a nuke? Then why does the existence of the agreement matter either way?
Are you saying Iran would magically produce a nuke the very day the deal expired? Then why don't they have one today?
How does ending the agreement make it harder for Iran to get a nuke? How does "tearing it up" prevent anything that the agreement itself wasn't preventing?
As for delivery, Iran does have missiles capable of launching a nuclear weapon at American assets in the Middle East, or American allies. Or even to just float it over on a ship.