<span style="color: #222222;">Iranian state media said the government displayed a domestically-built long-range, mobile surface-to-air missile system today. </span><br />'' <br />'' <span style="color: #222222;">The system's unveiling came on Iran's National Defense Industry Day and at a time of rising tension between Iran and the United States.<br />''<br />'' Iran developed a large domestic arms industry in the face of international sanctions and embargoes barring it from importing many weapons. </span>