According to a Huanqiu article, as long as the U.S. dollar remains the currency for debt settlement and reserve, it can easily mobilize resources throughout the world to launch and win any war.
The article said, "No country, regardless of its economic power, can mobilize global resources for its own use as the U.S. can. The U.S. dollar hegemony has in fact become the amulet protecting U.S. national interests and global military presence. … In other words, unless the dollar is beaten down, there is no country in the world that can compete with the U.S. in war. … Using war to get rid of many difficulties is still today’s top choice in the best interest of the U.S.”
Source: Huanqiu, August 7, 2010