Petro Poroshenko

Ukraine had an historic opportunity this week to move toward full integration with the European Union. EU leaders wanted to seal an association agreement which would have drawn one of Europe's largest nations firmly into Brussels' orbit. But Ukraine's president walked away from the deal, in favour of closer ties with Russia. Why? HARDtalk speaks to Petro Poroshenko, billionaire Ukrainian businessman and former minister. East or West - where do Ukraine's real interests lie?