Where has fighting been focused on day two of Russia’s invasion of Ukraine?

The second day of Russia's full-scale invasion of Ukraine focused on the capital, Kyiv, but in another major development the US said an amphibious assault had been launched by Russia from the Sea of Azov, west of Mariupol.

Russian forces entered the outskirts of Kyiv on Friday and were threatening the Ukrainian capital from the north-west and east in a lightning attack apparently aimed at seizing the city.

The defence ministry in Moscow claimed its forces had taken control of the strategic Hostomel airfield to the north-west after a day of fighting, while Russian tanks were filmed by locals in the Obolonskyi district about six miles north of the city centre in the morning.

Kyiv authorities earlier warned locals in Obolonskyi to stay off the streets because "active hostilities" were approaching - suggesting there could be a counterattack. Residents were urged to "make molotov cocktails". The defence ministry said it had distributed 18,000 assault rifles in the capital.

Gunfire could be also heard close to St Sophia Cathedral, reporters said, creating an increasingly tense atmosphere in the capital, which many expected would have been better defended given its obvious strategic significance.

Intense gunfire broke out on a bridge across the Dnieper River dividing eastern and western Kyiv, with about 200 Ukrainian forces taking defensive positions and sheltering behind their armoured vehicles and under the bridge. Another key bridge leading to the capital was blown away, with smoke rising from it.

Konrad Muzyka, the president of Rochan Consulting, said the "situation does look dire at the moment" particularly regarding Kyiv. "It appears that the main goal is to take Kyiv, break the C2 [command and control], and 'decapitate' the political leadership."