President Obama has hit Russia with sanctions and the expulsion of diplomatic personnel in retaliation for Vladimir Putin’s alleged interference with the U.S. election. He has also threatened cyberattacks against Russia.
In return, Russia is promising retaliation of its own.
With only twenty or so days left in office, the president has stirred up a conflict with Russia that his successor is going to have to deal with. Donald Trump, with his pro-Russian leanings, will probably reverse Obama’s actions, but this will just advance the narrative that the Russians put him in office, making his new administration and the nation as a whole look bad.
UPDATE: Putin is now saying he will not retaliate, hoping for better relations with the Trump administration.