The world economy is on course for its fastest growth in more than a half century this year, yet differences and deficiencies could hold it back from attaining its pre-pandemic heights any time soon.

The U.S. is leading the charge into this week’s semiannual virtual meeting of the International Monetary Fund, pumping out trillions of dollars of budgetary stimulus and resuming its role as guardian of the global economy following President Joe Biden’s defeat of "America First” President Donald Trump. Friday brought news of the biggest month for hiring since August.

China is doing its part too, building on its success in countering the coronavirus last year even as it starts to pull back on some of its economic aid.