BRUSSELS — Russia is likely to test NATO’s collective defense pledge very soon, Sweden’s top military official said, as Moscow escalates its campaign of hybrid attacks against Europe. “I'm sure and I'm convinced that they would be ready to test Article 5 of NATO at any point in the Baltic states or in some other part of Europe as well,” Swedish Chief of Defense Gen. Michael Claesson told POLITICO, referring to the alliance's common defense provision. “They are prepared to take enormous