On 9 June 1944, strong Soviet forces opened the Vyborg Offensive and pushed the front from the pre-1939 border to Vyborg in ten days. The returned Karelians were evacuated to Finland again. In the Battle of Tali-Ihantala, 25 June–9 July, the Finns concentrated their military strength and brought the offensive to a halt at the River Vuoksi, in the northwesternmost part of the isthmus, at the closest point only 40 kilometres from the border of 1940. The Moscow Armistice ending the war was signed on 19 September 1944. The entire isthmus became Soviet, although most of it has never been captured by the Soviets in battles. This time the ceded territories of the Karelian Isthmus (including the districts of Jääski, Kexholm and Vyborg) were incorporated into Leningrad Oblast (unlike Ladoga Karelia, which remained within the Karelo-Finnish SSR). The border of the Moscow Peace Treaty (1940) was recognized by Finland again in the Peace of Paris, 1947.