The U.S. is flexing its military muscle in the Mediterranean Sea, deploying two Nimitz-class aircraft carriers,... the USS John C. Stennis and the USS Abraham Lincoln.<br />CNN introduced the operations,... explaining it has exclusive access to the two carrier strike groups involving several ships and up to 120 aircraft each. <br />In a rare move, Washington's ambassador to Russia also took part. <br />The operations are seen as a warning to Russia which aims to strengthen its influence in the Mediterranean with the deployment of warships to the region. <br />