observation slit
оглядова щілина
оглядова щілина
supervise the observation of armistice conditions
United Nations India-Pakistan Observation Mission (UNIPOM)
United Nations Iraq-Kuwait Observation Mission (UNIKOM)
United Nations Observation Group in Lebanon (UNOGIL)
United Nations Yemen Observation Mission (UNYOM)
SLOCTOP (security, location, communication, targeting, observation, and position improvement)