On 1 May 2004, the European Union went through its biggest ever enlargement. 10 countries joined including eight from the former Soviet Union’s sphere of influence. For some, it was the moment the Eastern Bloc threw off the shackles of the Cold War and embraced a prosperous future in the EU. For others, it was the moment European countries lost control of their borders, leading to mass migration. Twice Italian Prime Minister, Professor Romano Prodi, was President of the European Commission at the time. He speaks to Ben Henderson.

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(Photo: People celebrate the Czech Republic joining the EU. Credit: Sean Gallup via Getty Images)