A Russian frigate armed with cruise missiles was reportedly heading to the Mediterranean a day after the first direct military strike by the US against the Syrian regime.<br/><br/>Russian state media reported that the frigate, the Admiral Grigorovich, would call at a logistics base at Tartus, Syria. Russia also pledged to help strengthen Syria's air defenses after the US strike on the Shayrat airbase in western Syria.<br/><br/>The White House late Friday refused to say whether strike was a one-off action or part of a new strategy designed to hobble the military capabilities of Syrian President Bashar al-Assad.