He passed away at 98.
The description of his life in Wikipedia http://en.wikipedia.org/wiki/Qian_Xuesen.
I just finished a book on him by Iris Chang. It is translated from English to Chinese. A very fascinating life.
99.9% chance he was not a communist when he was in US. He was a dedicated scientist.
The joke of the century is the witch hunt of communists in US and drove Tsien back to China to help China to develop missiles. It speeds up China’s missile development by at least 10 years when China did not know how to build good bicycle.
Did Middle East and N.Korea benefit from his initial work?
The book mentioned one or two flaws in his life. I believe he needed to do so to be political stable and be able to secure the funds for his work.