[guelo]

How is trade not a big part of macroeconomics? That's a dumb thing to says.

On your debt crisis points, it makes all the difference if the debt is denominated in the country's own currency or not.

[DavidHm]

His prize was for research on international trade and globalization.

This is a very very narrow field, which is dwarfed by the reach of macro economics.

In short, his credibility about macro, especially in regards to the effects of debts and deficits, is questionable.