China threatens to trigger dollar collapse

[Sigurd]

Are China in such a position that they don't need to buy anything using US dollars?
If they decide to get rid of their $ what would they buy their coal for? This necessitates that

1. They either have made new agreements with other suppliers that sell their stuff in other currencies.
Or
2. They are self sufficient on energy resources and other commodities that can be bought using dollars.

The real threat would be that the Chinese will demand another currency for their goods. This would lead the buyers to get this currency and maybe make the shift to sell their goods in the same currency.

I am not an economist, but I would gather that China needs supporters in this enterprise.
I am guessing a new axis of evil?

The US needs her supporters (those who sell their resources and goods in US dollars) to stay committed to the dollar, which traditionally are the big Oil and Gas nations.

The only real threat to the US dollar would IMO be the Euro. If enough nations shift their trade to this currency, then others will be forced to follow. Then there will be an end to the US dollar and maybe the US as we know her today.