Trump says he'll be Putin's "worst enemy" if dealings don't work out

President Trump again claimed in an interview with CNBC that getting along with Russia would be great for the United States, but that if their relationship doesn't work out, he will be "the worst enemy" Vladimir Putin has ever had.

Why it matters: Trump has long insisted that no president has been as tough on Russia as he has, taking time during the interview to slam former President Obama as a "total patsy" for Russia, even as Trump faces his own criticism for being soft on Putin during their summit in Helsinki.