<span style="color: #222222;">The US Treasury placed two Iranian business groups on its sanctions blacklist today, saying both were important suppliers of Tehran's missile programme and facilitators of its alleged proliferation activities.<br />'' </span><br />'' According to Treasury, a group named the Dehghan Network, had procured and supplied military-grade electronic components to an Iranian engineering company that works with the military and the Islamic Revolutionary Guard Corps.<br />'' <br />''<br />''A second group dubbed the Shariat Network, was also blacklisted for supplying aluminium alloy products to Iranian entities already sanctioned for their missile proliferation and nuclear weapons programmes.<br />