Unidentified traffic is subject to scrutiny by the UAE military, and should the need arise, intercepted. Something that may trigger such an action might be failing to respond when challenged. The US military operates extensively in the area, often flying maritime Due Regard, as they consider that over-water, 12nm from land, is 'international airspace'.
As these procedures are developed to cover a wide variety of scenarios, sterilisation of airspace can occur.