The decision to launch accession talks this week is a “big day” for her country, Olga Stefanishyna, the deputy prime minister for European and Euro-Atlantic integration, said. “This is the utmost will of the Ukrainian people. And this is the irreversibility. And you’ve seen Ukrainians stand up for their choice,” Stefanishyna said, speaking in Kyiv on Sunday. It was her first interview since being appointed chief negotiator for EU accession. EU member countries agreed on Friday to start entry talks with Ukraine and Moldova – overcoming vocal opposition from Hungary which takes over the EU’s rot…