Laughable. Obama let Russia roll in and take the lead in Syria because he had no plan. Hillary would do nothing as well.
Clinton is more of a hawk than Obama was.
What exactly would she be tough on?
She would have been tougher on Russia (especially in light of their election meddling). She supported and called for a no-fly zone in Syria. She would continue a hard-line stance against N. Korea and would be calling for tougher UN sanctions against them (as she did during the campaign).
I know you don't like Clinton, but Clinton is a hawk. This is one reason many Democrats supported Sanders over her. And also why many neo-cons supported her.
https://www.nytimes.com/2016/04/24/magazine/how-hillary-clinton-became-a-hawk.html