I believe the black swan is drawing near. My bet is that it will be the failure of a major bank (Deutsche Bank maybe) or some sort of gigantic default on a loan that will bring the house of cards tumbling down.
It could also be a major announcement from Russia or China that they are no longer going to conduct any business in US dollars.
I am also feeling China and Russia make a new joint currency backed by gold, instantly sinking the dollar, at that point.. .. boom.
China have ceased buying US treasuries, but they still hold
waaay to much to risk a serious USD devaluation.
And I really don't know why people keep using the word "Russia" as if it has any economic significance! Russia's GDP was less that Italy last time I looked!
If the conflict in Russia/Ukraine were to escalate further then there could be economic issues.