The fiancee of Jamal Khashoggi has said the world has failed to hold Saudi Arabia to account
There are quite a lot of cases when agents of a state can kill (with or without sanction) an individual: a spy, an "undesirable" person, a terrorist in a third country.
Using this case as an example, can SA be held accountable for killing the journalist (in 'having a tribunal' sense)?
Can a state be prosecuted for killing a foreign spy? What if a country sends a task force to eliminate a terrorist in a 3rd country?