As Russia's invasion of Ukraine approaches its 3-month mark, here's what's happened in key areas

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From CNN's Joshua Berlinger

It is nearly three months since Russia invaded Ukraine – a 12-week period in which Russian forces have wrought devastation on the country and its people, resulting in death on a vast scale and causing millions to flee.

But the invasion has not been the military success Moscow hoped, and is now deep into its second phase.

The bulk of fighting has moved to the east after failed Russian advances in central Ukraine. The Ukrainians are focusing on retaking some key areas closer to the Russian border, while Moscow is seeing its troops beaten back in a few key battles.

Western aid is also flowing into Ukraine, NATO is set to be strengthened as Nordic countries seek to join, and the first Russian soldier accused of war crimes has stood trial.

Here’s what has happened in several key areas since the war began.

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