Dubno, a modern fortress, built, like Lutsk, mainly in support of Rovno, to ward off possible aggression, now supplied an excellent starting point for a Russian drive into the heart of Galicia. Proceeding on both sides of the Rovno-Dubno-Brody-Lemberg railway the Russians should be able to cover the eighty-two miles which still separates them from the Galician capital within a comparatively short time, provided that Austrian resistance in this region continues as weak as it has been up to date. A greater danger than the capture of Lemberg was, however, presented by the Russian advance into the Bukowina. If these two Russian drives--to Lemberg and to Czernowitz--would prove successful the whole southeastern Austro-Hungarian army would find itself squeezed between two Russian armies, and its only escape would be into the difficult Carpathian Mountain passes, where the Russians, this time well equipped and greatly superior in numbers, could be expected to be more successful than in their first Carpathian campaign. Still the Russian advance continued, although on June 11, 1916, there was a slight slowing down on account of extensive storms that prevailed along the southern part of the front. In Galicia, in the region of the villages of Gliadki and Verobieyka, north of Tarnopol, the Austrians attacked repeatedly and furiously, but were repulsed on the morning of the 11th. Farther south, however, near the town of Bobulintze, on the Strypa, fifteen miles north of Buczacz, the Austro-Hungarians, strongly reenforced by Germans, scored a substantial success. They launched a furious counterattack, bringing the Russian assaults to a standstill and even forcing the Muscovite troops to retreat a short distance. According to the German War Office more than 1,300 Russian prisoners were taken. Simultaneously with this partial relief in the south Field Marshal von Hindenburg began an attack at several points against the Russian right wing and part of the center. He penetrated the czar's lines at two points near Jacobstadt, halfway between Riga and Dvinsk, and at Kochany between Lake Narotch and Dvinsk. At the three other points, in the Riga zone, south of Lake Drisviaty and on the Lassjolda, his attacks broke down under the Russian fire. Lemberg, Galicia's capital, was now threatened from three sides. Czernowitz, the capital of the Bukowina, was even in a more precarious position. It had been masked by the extreme left wing of the Russian armies and, unless some unexpected turn came to the assistance of the Austrians, its fall was sure to be only a matter of days, or possibly even of hours. All of southern Volhynia had been overrun by the Russians who were then, on the ninth day of their offensive, forty-two miles west of the point from where it had begun in that province.