Russia captured three Ukrainian boats and their crews off the coast of Crimea at the weekend, prompting Ukraine to impose martial law in 10 border regions and to warn of the threat of full-scale war with Russia. Hannah Murphy asks Henry Foy and Roman Olearchyk what’s behind the latest flare-up

Contributors: Katie Martin, capital markets editor; Hannah Murphy, City reporter; Henry Foy, Moscow bureau chief and Roman Olearchyk, Kiev correspondent. Producer: Fiona Symon

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