By Thomas Escritt BERLIN (Reuters) – Ruptly, a Russian state-owned news agency based in Berlin, is facing a staff exodus after President Vladimir Putin’s invasion of Ukraine that is part of a broader contraction of Russia’s global news empire. Employees complained on an all-staff call that they were being prevented from describing the invasion as such, amongst other editorial objections, according to a recording of the call heard by Reuters. Russia says its military deployment in Ukraine is a “special operation” and has cautioned local media to use that terminology. Chief Content Officer Ekate…