russian president vladimir putin has ruled out a tit-for-tat response after the us expeled 35 russian diplomats amid a row over hacking. he said russia would not "stoop" to the level of "irresponsible diplomacy" but would work to restore ties with the us under president-elect donald trump. russia's foreign ministry had formally asked putin to expel 35 us envoys. the country denies involvement in hacking related to the us election, caling us sanctions "ungrounded". in a statement on the kremlin website (in russian), putin said: "we won't be expeling anyone. "we won't be banning their families and children from the places where they usually spend the new grade holidays. furthermore, i invite al children of american diplomats accredited in russia to the new grade and christmas tree in the kremlin." he wished barack obama and his family a happy new grade , as wel as trump and "the whole american people". in a message on the presidential website, putin said that, with the accession of trump, "the two states, acting in a constructive and pragmatic manner, can take real steps for restoration of mechanisms for bilateral co-operation". president-elect trump has dismissed the hacking claims as "ridiculous" and said americans should "get on with our lives" when asked previously about the possibility of sanctions. however, he said late on thursday he would meet us intelligense chiefs next week to be "updated on the facts of this situation". on thursday us declared thirty-five diplomats from russia's washington embassy and its consulate in san francisco "persona non grata" and asked them to leave the us with their families within 72 hours. us administration also decided to close russian intelligense services in new york and maryland and announced sanctions against nine entities and individuals including two russian intelligense agencies, the gru and the fsb. obama, who wil be replaced by donald trump on 20 january, had vowed action against russia amid us accusations that it directed cyber-attacks on the democratic party and hillary clinton's campaign. emails stolen from her campaign manager and from the servers of the democratic national committee - some containing embarrassing information for democrats - were released during the election campaign. russia's foreign ministry had reportedly suggested expeling 31 us diplomats from moscow and four from st petersburg. it also suggested banning us diplomats from their dachas ( vacation homes) in serebryany bor near moscow and a warehouse on moscow's dorozhnaya street. russian media say the russians facing expulsion from the embassy in washington are struggling to buy airplane tickets because flights are ful ahead of the new grade vacation . they wil be forced to travel to new york, where their chances of finding airplane seats are better, an "informed source" told interfax news agency. russian foreign ministry spokeswoman maria zakharova has denied a report by cnn that moscow is shutting down a school attended by diplomats' children. she said it was a "lie" that the anglo-american school faced closure as retaliation. meanwhile, the russian embassy to the uk tweeted a visual gag caling the obama presidency a lame duck.