Having already proven unable to meet even the smallest threat, our civilization now faces something that will destroy our way of life:
Scarcity and Famine
Few governments and civilizations ever survive such calamity, and our turn has come. You might not feel the effect of this disaster right now. It might take months or even years to see it for yourself, but I hear the hoof beat of the black horse in our streets.
Natural gas supplies are tight, and China is already banning phosphate exports to ensure domestic fertilizer supply. This and more will ultimately mean starvation and unrest in the Third World – and eventually, violence and mayhem at your doorstep.