One way to reach the European Union is via the 'Eastern Mediterranean route' from Turkey into either Bulgaria or Greece. Back in 2015 millions of people reached Europe this way to flee conflicts in the Middle East. Since then, international deals have been struck and border security toughened across Europe to stem the flow of migrants. Yet, whilst other routes to Europe have seen a fall, the numbers travelling via this 'Eastern Mediterranean route' into the EU have increased since 2021. Presenter Nick Robinson hears from refugees in Turkey looking to leave and from those who have successfully made it across the land border into Bulgaria. He explores the success and limits of the Bulgarian border force’s efforts to police its border.