"The US has accused Tehran of arming Syrian government forces." -- BBC News - 9 June 2012
Uh huh... and? Has the US "accused" Germany of arming Israel with nuclear-capable submarines? Of course not. Not only because the United States would never accuse anything of benefit to Israel, but also because there is nothing illegal in one sovereign state selling or giving arms to another. In fact, the United States does it all the time. So what is there to "accuse" Iran of, other than throwing a petulant tantrum?