Why is the US supporting terrorism inside Iran?
The article which you provided did not say that the USA is supporting terrorism. There is no funding and the USA is only interested in locating al Qaeda figures. Here are the paragraphs you may have missed. A CIA spokesperson said “the account of alleged CIA action is false” and reiterated that the U.S. provides no funding of the Jundullah group. A senior U.S. government official said groups such as Jundullah have been helpful in tracking al Qaeda figures and that it was appropriate for the U.S. to deal with such groups in that context.