I need to generate article lists like this:

 

The articles in a category deals with international questions, I would like  to list them in two ways:

 

1. A plain list ordered via publishing date, for example


USA_article_1 27-8-2009
Chile_article_1 24-8-2009
China_article_1 21-8-2009
USA_article_2 20-8-2009

etc...

 

2. An aggregated list with info on number of articles:


Chile (1 article)
China (1 article)
USA (2 articles)

etc...

 

Is it possible to do this with the help of K2:s tags or extra fields?

 

Any help would be appreciated.