Still got that comprehension problem I see. You said, "The brou-haha over Iran could mean that we have an escalatory series of punitive sanctions which results in their rejecting our Treasury note offerings. This typically runs close to $195 billion a year".
The article you linked to did not mention US Treasury securities. If you'd like to know what they buy in the U.S., I suggest you find another article.
So you can't disprove a reasonable inference.