As he argued, if Greece goes (which could happen as soon as next month) then there will be a run on banks in Italy and Spain.
Anyway, that seems to have caused quite a stir.
In Spain, the hashtag #quediceKrugman (What Krugman says ) has actually gone trending. People are buzzing about the post.
NOW WATCH: Money & Markets videos
Business Insider Emails & Alerts
Site highlights each day to your inbox.