President Obama's top counterterrorism adviser, John O. Brennan, will lead the White House review of intelligence community information practices and aviation security, even though he was CEO of the private company the government used to help manage a key terrorism database before he joined the administration. In response to questions about Brennan's potential conflict of interest, White House ethics counsel Norm Eisen has issued a waiver for Brennan, official said. Before he served as CEO of The Analysis Corporation, or TAC, Brennan was the interim director of the first incarnation of the National Counterterrorism Center. In that position, he oversaw...