What should Baltic States do to face off external threats?

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What should the Baltic states do to better integrate and strengthen their defences against external threats? The four panellists at the World Questions debate in Riga, Latvia, give their views. First you hear Baiba Rubesa, chair of the Rail Baltica project, then Magnus Christiansson, a Swedish security strategist specialising in NATO and the Baltic; Ojārs Ēriks Kalniņš, chair of the Foreign Affairs Committee in the Latvian parliament; and Nils Ušakovs, the mayor of Riga. (Photo: The Baltic states of Latvia, Lithuania and Estonia, and the countries which share borders with them) (Credit: Thinkstock)