The fact that Trump has taken the notion of a true statement, which is that peace is ensured through strength, and then bastardized it into some macho bullshit, does not mean that believing in peace through strength equates to defending Trump.
And this further misses the actual point of the statements, pointing out flaws in Obama's foreign policy, which does not somehow equate to support for trump. Whatever though. You do you. I do not care any more.
All our choices in Syria were terrible. They have state-of-the-art air defenses with Russian advisors, so air support or a no-fly zone would be hugely risky. Supplying arms to the rebels all but guarantees that some end up in the hands of Al Qaeda or ISIS. The red line speech certainly didn't help things, but things were going to be crappy regardless.
When you draw a line, you are required to enforce it.
If you aren't willing to, you don't draw the line.