Is Iran really a threat to the USA?

Military Hardware

In terms of military hardware, the US Defence budget is around 543 Billion Dollars. On the other hand Iran has slashed Defence spending to less than $43 Million. Iran has older models

Personnel

The US has over 2 Million active military personnel. On the other hand, Iran has a strong ground force and the terrain is difficult to navigate. Iran has about 30 000 Kurds special forces who are extremely experienced in unconventional warfare.

Technology

The US has advanced technology such as drones and spy planes.

The US has by far the most advanced Airforce in the world.

Conclusion

This is turning out to be a David vs. Goliath sitaution. The question is: Will does Iran have a Nuclear weapon?