short period from 1947 up to 1989.
And the evidence of that is to be found in the fact
now we are speaking of post-bipolar system.
We are supposed to be in a post-bipolar system, but what does it mean?
What is a post-bipolar system?
Through this concept, we know that we were in a bipolar system, but
in which kind of internal system we are?
The problem of this difficulty is related to the concept of polarity,
which is not really covering the diversity of the international systems.
What is a pole?
First of all, what is a pole?
Pole is an attractive power, an attractive force
which is able to organize and structure a coalition.
It's not evident that in all the periods we can
find a real attractive power in internal system.
If we go back to 1947, at this time,
we had several factors which were
pushing to this polarization.
First of all, nuclear weapon.
Nuclear weapon creates a new order in the international arena.
That's to say, if you are not protected by your nuclear power,
you are really and strongly threatened by the nuclear power.
That's to say in a nuclear movement,
camps are organized under the umbrella,
under the protection of a super power.
Nuclear power was the main active factor for
creating the condition of the bipolarity.
The evidence is to be found in the fact that NATO was created in 1949,
that's to say, the year when USSR was equipped