Both, and DoS is so politically motivated, it would be hard to tell the difference between the two. Career foreign service personnel are more interested in their political climb up the ladder than doing any diplomatic work. At one time, “Route Irish” a road from the old Republican Guard palace to the military side of Baghdad International was the most dangerous 8 miles in Iraq. Attacks were common and we were shot at almost every trip (armored vehicles). Before they put heavy fencing on top of a couple of overpasses, we would get grenades thrown at us on a daily basis.
Yet, one assistant secretary for Economic Affairs insisted on going at least 4 times a week, he told me the more he went, the more he would impress his supervisor for a promotion, half the time, he would lie about meeting someone and spend his time in the Green Bean coffee shop. (Green Bean shops are found on nearly every FOB and base).
Over all, yes, especially the ones committed to doing the job, but, these were usually low level personnel. Remember, the Ambassador sets the tone and the rules, and since they are appointed by the President, usually try to please him. I have actually liked working for a couple of Ambassadors and both were candid enough to use the job for what it is, a springboard to a corporation or president of a major university.
Yes, that is their job, but, a visit from our distinguished leaders were nothing but photo ops for their constitutes back in their home state. They were each bring about 20 support personnel, usually including a make up artist and hair stylist ( funded by your tax money) They never , ever actually went into the red zone. They always treated the security and Military/ Embassy support personnel assigned to them like slaves. Asking people to take back their coffee because it had too much cream or complaining that it was too hot or too dusty. One told me that he would not follow my orders on wearing a protective vest, because his shit cost more than what I was wearing. They truly think they are privileged beings , but, what they really are are just ass kissing assholes.
Not being bitter, aggressive, or spiteful. That was my personal experience, someone else may have a different view.