Washington( CNN) For Donald Trump, this was supposed to be a week in which he established himself as the only presidential nominee fit to serve as commander in chief.

But that's not working out so easily for the Republican presidential nominee.

Trump is back at the center of controversy following an NBC News forum Wednesday in which he praised Russian President Vladimir Putin, falsely asserted he opposed the Iraq War, seemed to criticize US generals, politicized nonpartisan intelligence briefings and stood by a tweet that connoted military sexual assault is the result of women in the armed forces.