Mr. David Cooney:

They have support. There is a considerable expatriate community outside Iran, which is very active and well funded. As often happens with expatriate communities, they would be very happy to see regime change in their home country. There are differing views as to how that should be achieved. As of now, the People's Mujahidin of Iran has foresworn military activities. Therefore, it would now present itself as a political movement rather than a military movement, which begs the question as to why US generals are there.

Have I covered everything?