How is anti-aircraft or counter-air defence defined?
"all measures designed to nullify or reduce the effectiveness of hostile air action
Who defined it?
NATO
How many things are included in that?
Four
What is one of those things that is included?
ground-and air-based weapon systems
What is the main efforts in most countries?
homeland defence
What do they call it in France?
DCA
What about in Germany?
Flak
What task do they have?
intercepting any projectile in flight.
What are they referred to as in Russia?
Protivovozdushnaya oborona
How many examples are given as to what it is named in other places?
Four