As the war in Ukraine drags into its fourth week, Ukrainian life is largely lived underground, and it's from there the wheels of government continue to turn. 

In a heavily fortified bunker in the capital Kyiv, the President Volodymyr Zelenskyy is leading the country's military operations and successfully galvanising his people in the face of the fierce Russian assault. 

Today, ABC 4 Corners reporter Sarah Ferguson takes us inside that bunker, and to the frontlines above ground as Putin’s forces close in. 

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Sarah Ferguson, reporter, ABC TV 4 Corners