last week, he used a signing statement to challenge the constitutionality of several passages. but he left unmentioned the finding embedded in section 211 part 6 which enshrined into law the conclusion of the u.s. intelligence agencies that russian president vladimir putin ordered an influence campaign in 2016 aimed at the united states presidential election. >> what the united states has done, since 1945, from a defense and national security perspective is prevent great power conflict for really an unprecedented period of time. >> in comments to msnbc, the white house national security advisor said his mandate from his boss is to counter russia's, quote, destabilizing, behavior here in europe and elsewhere while still seeking avenues for collaboration such as the fragile cease-fire in southwest syria that can potentially improve washington's relationship with the kremlin. >> it's at its bottom; right? but there are still areas where interests overlap and to look for areas of cooperation. >> to one development