US President-elect Donald Trump has praised Russian President Vladimir Putin for refraining from retaliation in a dispute over spying and cyber attacks. Trump wrote on Twitter from Florida that "Great move on delay- I always knew he was very smart" . <br/><br/>Russian President, Vladimir Putin has ruled out a tit-for-tat response to the expulsion of diplomats in a row over hacking. He said in a statement that he would not hit back for the US expulsion of 35 diplomats over hacking related to the US election. He said further steps towards the restoration of Russian-American relations will be built on the basis of the policy which the administration of President Dpnald Trump will carry out.<br/><br/>Obama on Thursday ordered the expulsion of the Russians and imposed sanctions on two Russian intelligence agencies over their involvement in hacking political groups in the Nov. 8 U.S. Presidential election. However, Moscow has denied the allegation.