security and that such investigati investigations the nsc was not going to be involved in or push. when sondland testified before investigators he offered a different version of events saying if ambassador bolton, or others had misgivings about the propiet of what we were doing, they didn't share those with me then or later. burisma wasn't connected to the bidens until much later. hill told investigators that bolton exclaimed he wasn't going to get involved in whatever drug deal sondland and acting chief of staff mick mulvaney were cooking up, sources told cnn. >> john bolton is a very important witness. he has relevant information. we want him to come in and testify. >> reporter: sara murray, cnn,