The Minsk ceasefire is once more on shaky ground, with the outbreak of fresh fighting in eastern Ukraine.
Both the Ukrainian military and pro-Russian rebels have accused each other of intensifying attacks in recent days.
Reports suggest at least six Ukrainian servicemen were killed between Monday and Tuesday (April 13-14), representing the heaviest loss in weeks for pro-Kyiv forces.
Some 12 were wounded in a surge in fighting, which has been largely concentrated around rebel-held Donetsk, according to government spokesperson Andriy Lysenko.
Meanwhile, pro-Russian officials say the Ukrainian military has repeatedly fired rounds of artillery at rebel positions, the separatist news agency DAN reports.
Report from @OSCE on renewed intensive fighting around #Donetsk & #Shyrokyne http://t.co/ZvQtOVCJI0 pic.twitter.com/IrGRHBSHPM— Rodrigo Barbosa (@RodaLarga) April 14, 2015
‘Grave concern’
Foreign ministers from Ukraine, Russia, Germany and France have condemned the renewed