is legal, there is a mystery. one, why president trump ultimately released that military aid to ukraine that he held up for months, which cnn now reports came after a republican senator and the firing of the president's national security adviser. sara murray has done some terrific reporting on this. joins us now with more. what are you learning here? >> we know the president was under a lot of pressure pby the beginning of september to release this hold on funds. one of the last things he did before finally relenting was speaking to the senator from ohio. on this phone call on september 11th, he made the case that if you don't move to release this money now you are going to lose it because the fiscal year is going to end. ukraine is not going to end these funds and it is going to be a big problem. at the end of the call, the president hung up and he ended upturning to his aids and saying, okay, release the money. and this actually came as a