Authorities say Russian missiles have hit a Ukrainian army training ground and killed three soldiers as Ukraine struggles to make up a severe manpower shortage in the three-year war.

Russian missiles hit a Ukrainian army training ground, killing three soldiers and wounding 18 others, authorities said, targeting Ukraine's efforts to make up a severe manpower shortage in the nearly 3½-year war.

The Ukrainian military said a Russian missile strike on a training facility in the north of the country killed at least three reservists and injured 18.