Trump knows it's fake news, why should appease CNN or some other BS news story by defending it. That's what they want him to do, defend a story for weeks on end.
As far as the taxes go, what is anybody gonna do about his taxes prior to him being president anyway, except make up more bs if he releases them. He worked all over the world, has hundreds of corporate entities, has great accountants I'm sure, IRS appears to be happy...
Maybe he's playing cat and mouse with his taxes like Obama did with his birth certificate. Who knows and who cares.