PRESIDENT Obama has deployed US special forces troops along Lithuania's border with "aggressive" Russia.

Tensions between Washington and the Kremlin have reached Cold War levels amid reports Vladimir Putin is deploying nuke-ready missiles in the Russian province of Kaliningrad – which borders Poland, Belarus and Lithuania.

And Lithuanian Defence Ministry spokeswoman Asta Galdikaite confirmed America has offered additional military support following Russia's annexation of Crimea.

She said: "The United States was the first to offer additional safety assurance measures to the Baltic countries following the deterioration of the security situation in the region after the annexation of the Crimea."