An emboldened Russia has ramped up military offensives on two fronts in Ukraine. The renewed fighting has scattered Kyiv’s precious reserve troops and threatened to expand the fighting to a sixth Ukrainian region as each side seeks an advantage before the fighting season wanes in the autumn.

Moscow's forces made gains in the Kharkiv and Zaporizhzhia regions, according to the Institute for the Study of War (ISW).

Russia has made incursions near two towns key to army supply routes in eastern Ukraine, a Ukrainian military official said on Wednesday, as Moscow seeks a breakthrough in a summer offensive at a time of uncertainty over U.