investigators on tuesday as well as the delivery of nearly $400 million on security and military aid was contingent on ukrainian officials carrying out investigations in burisma, the bidens, the 2016 election and crowd strike nbc news has learned. colonel vindman said in his opening statement i did not think it was proper to demand a foreign government investigate a u.s. citizen, and i was worried about the implications of the u.s. government support for ukraine. according to nbc news two sources familiar with the testimony say that colonel vindman later went further than his opening statement by drawing a direct line between the deliverables for ukraine and the multiple investigations. leading off our discussion tonight are democratic congressman rajah, he attended thedes of both christopher anderson and catherine croft today. also joining us jill wine-banks,