Russia 's capture of three Ukrainian naval ships on the 25 November 2014 lead to Western sanctions such as those imposed when Russia took control of Crimea in 2014 . (Reuters) - Concern over the escalation of conflict between the two countries saw the price raised to 67.17 against the US dollar . On 26 November , Ukrainian President Petro Poroshenko declared the introduction of martial law in the country for two months , subject to parliamentary approval .
Russia 's capture of three Ukrainian naval ships on the 25 November 2014 lead to Western sanctions such as those imposed when Russia took control of Crimea in 2014 . Concern over the escalation of conflict between the two countries saw the price raised to 67.17 against the US dollar . On 26 November , Ukrainian President Petro Poroshenko declared the introduction of martial law in the country for two months , subject to parliamentary approval .