Leaders of the world must know economics more and more.
Do they know that modern economics is the monster?
The monster has more 1000 faces and more 1000 bodies.
To know the monster isn't easy job.
Each leader save only his country.
Nowadays, this action is very dangerous.
Because the monster has enormous faces and enormous bodies over leader's imagination.
From now each leader of the world must consider not only his country's economics
but also world-wide level economics otherwise leader destroy his country.