The quadrennial World Cup was played this year so perhaps I could be excused for thinking it would not be an auspicious time for Argentine — Brazilian relations. However my experience this week in Buenos Aires and Sao Paulo belies that assumption.

I have been visiting these two great countries regularly for many years including the period in the late 1990s when I enjoyed my first operating role at Reuters as the manager responsible for our Latin American operations. What I recall clearly from that time was that despite the creation of the Mercosur trading zone linking them both nations acted more like competitors than trading partners. Senior executives and government officials would compare the one to the other and I always had the feeling they viewed a gain for one country as a loss for the other.

I come away from this trip with a totally different impression. I was struck how leading figures in Argentina now recognized that the success of Brazil over the last several years is not just one of those periodic false dawns of the past. This time it is not just luck or the IMF or strong caipirinhas. There was a recognition that what is good for Brazil could also be very good for Argentina through free trade labor mobility and foreign investment.

What a wonderful maturing in the bilateral relations of these perennial football rivals. But don’t expect to see Diego Maradona replace Dunga any time soon.