As Ukraine war enters new phase, can western arms turn the tide?

Analysis: Poor Russian tactics and Ukrainian determination gave early successes, but forces in east and south are more dug in

• Russia-Ukraine war: latest updates

As the war in Ukraine enters a new phase, Nato countries have been gradually stepping up their supply of weapons to Kyiv. In doing so, western nations are quietly crossing the defensive-only threshold set by leaders at the start of the crisis.

But the question remains whether the gradual escalation in arms deliveries can avoid a Russian retaliation and turn the tide on the battlefield, where Moscow is seeking to wage a more conventional military-on-military war in the eastern Donbas.