>>. >> donald trump clearly attempting to lower the temperature after earlier in the day he escalated his public spat with the president. tweeting today "doing my best to disregard the many inflammatory president o statements and road blocks. thought it was going to be a smooth transition, not." this after president obama used his high-profile speech to take a failed jab at his successor. >> even when hatred burns hottest, even when the tug of tribalism is at its most primal, we must resist the urge to turn inward. we must resist the urge to demonize those who are different. >> reporter: the escalating war of words between the outgoing and incoming in president, a sharp departure from the immediate post-election vow to work together.