In Summary
- Russian troops are in northern districts of the capital Kyiv, Ukraine says, and video shows armoured vehicles advancing
- The government calls on citizens to make Molotov cocktails and defend the city
- At least 25 civilians have been killed and 102 injured in airstrikes across country, says the UN
- Ukraine's president asks the UK and other allies to help stop Russia's assault
- On an island in the Black Sea, 13 border guards refused to surrender to a Russian warship and were massacred
- The Champions League final is moved from Russia to Paris
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