“Let’s be clear: Donald Trump simply doesn’t know what he’s talking about. And his bluster overcompensates for a shocking lack of knowledge on the complex national-security challenges that will confront the next president of the United States,” former Florida governor and presidential candidate Jeb Bush stated in a National Review op-ed published Tuesday. This comes during the continuing feud between Trump and Bush since the former attacked the latter’s brother for the 9/11 terrorist attacks.