>> reporter: a dear mr. trump letter from russia's vladimir putin released this morning by the transition. i hope that after you assume the position as president of the united states of america, we will be able, by acting in a constructive and pragmatic manner, to take real steps to restore the framework of bilateral cooperation. today, trump called a very nice letter from vladimir putin. the date on putin's letter, december 15th, more than a week ago, releasing it now could be design dodd lower the temperature, after his own explosive comments hours earlier. threatening to engage in a nuclear arms race. during a commercial break, trump called a pajama-clad msnbc host sitting on an oddly cozy set, let it be an arms race, we will outmatch them at every pass and outlast them all. trump's incoming press secretary