She's four heartbeats away from becoming POTUS.......
Okay, that's just morbid and beyond even what a Clinton would imagine.
Single assassination? Maybe.
Double? Ludicrous.
Triple-hit on the Prez, Veep and Speaker? Hollywood couldn't come up with a passable plot for that, let alone reality do so with an FBI-proof result.
And... I doubt a Clinton would want to be Prez in a situation where the former prez/veep/speaker had all been whacked by an external power. We'd probably be talking about DC getting nuked at that point.