If you think Marco Rubio deserves serious consideration as both a presidential candidate and a deep thinker on foreign policy and how to deal with “radical Islam,” read this take by Josh Marshall.

Bottom line: Rubio’s not really ready for prime time. And beyond that, even though it can sometimes be a bit trying to hear people avoid using the adjective which obviously is the common denominator with all violent jihadists, it’s a caution and wisdom that is worth employing. When it comes to statecraft and hearts and minds, our words are not just there to make us feel good or increase our self-esteem. They are tools to communicate, persuade and ultimately get results that we want and need.

There’s a big difference between being serious and being clever, and I don’t think he knows that.