Ukrainian President Petro Poroshenko said on Thursday that Russian forces and entered his country and the military conflict was worsening after Russian-backed separatists swept into a key town in the east and threatened other areas.
He said he was cancelling a trip to Turkey “as Russian troops have actually been brought into Ukraine.”
Earlier, a combined force of Russian forces and separatists moved into Novoazovsk, which has been under pressure from them for two days. They now had the potential to threaten Mariupol, a port city further along the Sea of Azov coast.
“A counter-offensive by Russian troops and separatist units is continuing in south-east Ukraine,” Ukraine’s defense and security council said in a post on Twitter.