Conversation so far:
What is Neo-Keynesian economics?
they combined Keynesian analysis with neoclassical economics to produce neo-Keynesian economics.
What is Keynesian analysis?
The Keynes-plan, concerning an international clearing-union, argued for a radical system for the management of currencies.
How did he want currency managed?
He proposed the creation of a common world unit of currency, the bancor, and new global institutions - a world central bank and the International Clearing Union.

Question: Were his economic views popular?
Self-contained rewrite: Were John Maynard Keynes' economic views popular?