The <a href="https://en.wikipedia.org/wiki/Dubai_Metro" id="mwAYA" rel="mw:WikiLink" title="Dubai Metro">Dubai Metro</a>, the first urban train network in the <a href="https://en.wikipedia.org/wiki/Arabian_Peninsula" id="mwAYE" rel="mw:WikiLink" title="Arabian Peninsula">Arabian Peninsula</a>, is ceremonially inaugurated.