I think OP was asking in regard to individuals from anywhere else in the world visiting countries anywhere else in the world besides US (or NATO). The question you could ask is which country would bomb people with drones based on cellphone metadata? https://motherboard.vice.com/en_us/article/d738aq/us-drones-...
I get the whole point of we at least have the freedom to discuss this but it doesn't work without its hiccups. https://en.wikipedia.org/wiki/Laura_Poitras#Government_surve...