The governments of the world using Keynesian tactics all have central banks that collude with one another. It's why they all debase their currencies to prop up the dollar. We're using Keynesian methods here, so it stands to reason they would all use them as well, because if they didn't, the whole "global economy" wouldn't produce the results desired. Why a nation would debase its currency merely to prop up the dollar and the idea of globalization is beyond me. They're hurting their own economy to help an agenda that may or may not even be viable in the long term. There's no proof that globalization is prosperous, because we're still tinkering with it, hoping that it works. So far, it would seem to me that it doesn't. A country should protect its own interests first, not run policy detrimental to it, merely to prop up a world wide agenda.
If you ask me, it's the "global economy" that's insane. Not Austro-Libertarianism.
Trade is fine. It always has been. But inter-connected economies are ridiculous.
Where is the proof that Keynesian policy works? We're in a global recession, teetering on depression, because of Keynesian policies. Borrow and spend, inflate and spend, and then when all else fails, extinguish money and start again. How is that good policy?