Most Difficult problems of world

I can say many problems are there and they all are link with each other.
From My point of view the basic problem is of UNEMPLOYMENT which is the biggest, followed by Poverty, Hunger and all other.

 

The main problems of my country, energy problems, terrorism, drones attacks, unemployment and inflation

 

Sounds a lot like the US.

 

terrorism and second is population
Population is directly connected to rest of problems like pollution, unemployment, Poverty and they are connected to their sub problems
Pollution -> Global warming, Unemployment -> Poverty etc.. so I think there are only 2 major problems

 

We've really only got one problem here in the US and his name is Barry.

 

Isn't ignorance the root of all the named troubles?

 

Nothing. There are no problems that people haven't accepted already.

 

In America, the most difficult problem we face is Adolf Barrack.