Russia has said the number of Ukrainian military forces deployed in the southeast of the country should cause "deep concern" among members of the Organization for Security and Cooperation in Europe.
In a statement, the Russian Foreign Ministry said there were more than 11,000 Ukrainian troops, 160 tanks, 230 armoured vehicles and 150 artillery pieces deployed in the region as part of an operation to counter pro-Russian separatists.
More top news
French firefighters have tamed one of the fiercest blazes to break out during four days of wildfires in the country's Mediterranean coast.
The parents of Maya Kantengule, 7, have paid tribute to their daughter who was found at the bottom of the pool at a friend's birthday party.
Staying unsettled over the next few days, with showers or longer spells of rain