The three-week 'Pitch Black' exercise, being hosted by the Royal Australian Air Force (RAAF). The Indian Air Force, with its four Sukhoi-30 MKI fighter jets and two C-17 heavy-lift aircraft, joined the 'Pitch Black' exercise.
United Nations Secretary-General Antonio Guterres announced the appointment of Simon Stiell of Grenada as Executive Secretary of the United Nations Framework Convention on Climate Change (UNFCCC).
The astronomical observatory at the LS College, Muzaffarpur Bihar has been included in the UNESCO list of Important Endangered Heritage Observatories of the World.
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