Turkey ordered an Armenian aircraft bound for Syria to land on Thursday.<br/> <br />Authorities were searching the plane's cargo in the second such move by Ankara in a month.<br/> <br />Searches like this are designed to prevent the use of its airspace to provide supplies to the Syrian military.<br/> <br />According to a Turkish broadcaster the plane was carrying humanitarian aid.<br/> <br />In mid-October another Armenian plane was also stopped and searched, before continuing on its way.<br/> <br />Turkey has become increasingly assertive in challenging Syrian President Bashar al-Assad.<br/> <br />Last month, Ankara banned Syrian aircraft from Turkish airspace after finding Russian munitions onboard a plane bound for Syria.
