It is a Russian airborne command and control aircraft.
It was introduced in 1992 and only 4 units were manufactured. Today 3 of them are in service.
It is a conversion of the IL-86 plain.
It is an airborne command center for Russian officials in the event of nuclear war.
There are no external windows to shield it from nuclear blasts. It also have advanced satellite communication equipment and the ability to refuel on air.
[Source: en.wikipedia.org]
