There is little evidence of what you say. On the other hand, there is a country in the region that it's using any excuse that it find to expand itself to great cost to the civil population there.
Anyway, it's kind of funny that the USA have military posts more than 7000 miles away from its borders, but the danger of 'expansionism' is from Iran.
We are in a fantasy propaganda land where Iran is attacked in the middle of negotiations and is Iran the guilty party. How many people have to die in those USA wars? I mean, enough is enough.