KIEV , Ukraine, Aug. 27 (UPI) -- Ukrainian and Western military officials said Wednesday Russia has begun a stealth invasion of a previously uncontested part of Ukraine.
An attack on the city of Novoazovsk by pro-Russian troops and military equipment has opened a third front, after fighting in the cities of Luhansk and Donetsk, and near the southern city of Mariupol. Ukrainian troops retreated from the city as shelling continued. The retreat verified Western and Ukrainian claims Russia was leading a counteroffensive after Ukrainian troops advanced in Luhansk and Donetsk.