The idea is unworkable due to NATO’s role, the bloc’s foreign policy and security chief Kaja Kallas has said The idea of a unified European army as advocated by Ukraine’s Vladimir Zelensky is unworkable because many EU states are also members of NATO, the economic bloc’s foreign policy and security chief Kaja Kallas has said. Zelensky called for a “united armed forces” of Europe during a controversial speech at the World Economic Forum in Davos last week, claiming Ukraine’s combat experience