Every dictator needs assassination prevention!
Unless you're Hitler... I'm not sure how many other people survived 41 assassination attempts... some by pure luck... some by his assassins being idiots/unprepared (one time they put a bomb on a plane, but forgot that the cargo hold would be cold and it was too cold for the explosives they used...)
According to my dad, some Chinese comic book artist managed to infuriate his boss/evil corporation (the corporation is always evil... even corporations make movies about evil corporations...IT'S A TRAP!) so they decided to chop him (...yeah...) and he saved his life with those brick-thick cell phones they used back then.
SAVED BY CRAPPY TECHNOLOGY!
Any phone that can make and receive calls and has a decent built-in camera is sufficient, IMO.
Watching old movies with cellphones in them is hilarious...
There is a difference between a bulletproof and a knifeproof depending on the type of vest. Some bulletproof vests aren't resistant to shanking!
Not sure if you'd get close enough to stab them, but y'know! THE MORE YOU KNOW