New York Times: Mr. Putin tests the West in Ukraine
A member of Ukrainian volunteer battalion Dnipro looks through binoculars near the small southern Ukrainian city of Novoazovsk, Donetsk region, on Aug. 27.
The evidence has been mounting for some time, but there is no longer any doubt: Russian troops are in Ukraine, not as volunteers, as the rebel commander in Donetsk would have the world believe, but in units equipped with mobile artillery and heavy military equipment.