Preferable would be to provide a translation of the article for those who don't speak Spanish, of whom there are many in the region as well as those in the rest of the world but an interest in the region. If not a full translation, then at least a precis should be provided.
If the article is online, then I would prefer a link to it rather than quoting the whole article verbatim, which takes up server space, download time and bandwidth. Furthermore, online translators are available for those whose Spanish is as limited as mine!
