In January, Russian president Vladimir Putin withdrew the Russian air umbrella
protecting Afrin, enabling the Turkish air force to bomb at will.
In the end, Mosul was retaken from the Islamic State by selected Iraqi infantry units that were trained and advised by the United States and operated under an air umbrella
provided by the Americans.
But it is losing territory fast and it is important to keep in mind that much of this is irreversible for a host of reasons, including: - More important is ISIL's progressive loss of access to the Turkish border which has been largely sealed off by the advance of the Syrian Army assisted by a Russian air umbrella
. The narrow corridor between Aleppo and the Euphrates that links the self-declared "Caliphate" to Turkey is also under threat from Kurdish forces in the east and Syrian Army in the west.
Wang Chuan, 27, of Nanjing, said he came up with the idea for the air umbrella while watching wind change the direction of falling rain on top of a building and he enlisted postgraduate students at Nanjing University of Aeronautics and Astronautics and doctoral thermal engineering students at the Beijing University of Aeronautics and Astronautics to help him create viable models.
Caption: The "air umbrella," is a device that creates air flows to keep the user dry in a downpour.
BAGHDAD / NINA / Ministry of Defense announced that the Air forces start implementation of nocturnal sorties operations in Anbar to secure air umbrella
for one of the units of the ground forces.
However, unlike Libya, Washington sat on its hands, providing no air umbrella
or enforcement of a cordon sanitaire.
The actual landings, which involved the use of 4,000 ships, with several thousand smaller craft, were made under cover of the most gigantic air umbrella
The 10-person "Discover Oman" team has distributed 900 Oman Air umbrellas
-- a number that might have much to do with the torrents of rain that the low-pressure systems rolling in from the North Atlantic have dropped on Le Havre.