The Kazhaks are perfectly capable of defending themselves
It seems a bit patronizing to see them as a soft, easy target. If they're clever they'll turn all this attention to their advantage. Imagine a slick tourism campaign centered on the theme: Come see the REAL Kazhakstan!"
I wouldn't dwell too much on any potential damage that one smart-ass comedian might possibly do to a nation's reputation. Besides, everyone should keep in mind that a comedian's job is to be funny, not sensitive nor politically correct.