Our intelligence communities spend a lot of time and effort gathering a lot of strands and a lot of data [on Russian hacking]. There are times where they're very cautious and they say, "We think this is what happened, but we're not certain."
Barack ObamaBut do I think that our actions in anyway violate the War Powers Resolution, the answer is no.
Barack ObamaOn issues like Ukraine, on issues like Syria, we've had very significant differences [with Russia].
Barack Obama