Passage: Donetsk Oblast is located in southeastern Ukraine. The area of the oblast (26,517 km²), comprises about 4.4% of the total area of the country. The oblast borders the Dnipropetrovsk and Zaporizhia Oblasts on the southwest, the Kharkiv Oblast on the north, the Luhansk Oblast on the northeast, the Rostov Oblast in Russia on the east, and with the Sea of Azov on the south.

Question: what area is donetsk oblast?
southeastern Ukraine