at risk from the criminal acts of another individual (…).Not every claimed risk to life can entail for the authorities a Convention requirement to take
operational measures to prevent that risk from materialising. For the Court to find a violation of the positive obligation to protect
life, it must be established that the authorities knew or ought to have known at the time of the existence of a real and immediate
risk to the life of an identified individual from the criminal acts of a third party and that they failed to take measures within the
scope of their powers which, judged reasonably, might have been expected to avoid that risk".