Russian troops have expanded their offensive across Ukraine as they continue attempts to encircle and cut off the capital Kyiv.
Here are the latest developments on day 16 of the invasion:
- Key city of Dnipro struck for the first time since invasion
- Lutsk and Ivano-Frankivsk in the west also hit overnight
- Satellite imagery suggests new push to surround Kyiv
- Southern city of Mariupol continues to be besieged
Russia launched its attack in the early hours of 24 February from three main directions: north, south and east.
Targets all over the country have been attacked from land, sea and air.
The fight for Kyiv
Russian forces are attempting to encircle and cut off the Ukrainian capital, with its troops now moving towards the city from multiple positions.
New satellite imagery shows that elements of a large Russian convoy to the north west of the city are now redeploying around the outskirts of Kyiv.
An advance by Russian troops heading for the capital from Sumy in the east has also made some significant progress in recent days.
The movement around Kyiv suggests Russian troops are preparing for a siege of Kyiv rather than a full-on assault, according to Dr Jack Watling, of the Royal United Services Institute, a defence think tank.
Slow Russian progress in the north
Although Russian troops are now making gains on the outskirts of Kyiv, their progress in the north has been much slower than in the south.
The main advance towards the capital initially came from Belarus, where Russian troops had gathered, down the west side of the Dnieper River via Chernobyl.
But the large Russian column heading for Kyiv faced strong resistance after reaching Hostomel airport to the north west and also suffered logistical issues, like a shortage of fuel.
Now, however, the convoy is dispersing around the west and south of the capital.
To the north east, Russian forces have continued efforts to take the city of Chernihiv, but have yet to advance down the east bank of the Dnieper River.
Troops coming from Sumy in the east have made progress and are nearing the capital but reports have suggested supply lines there are under considerable pressure.
Big Russian gains in the south
Russian forces have made rapid gains across the south of the country, advancing east and west from Crimea.
In the south east, there is growing concern for tens of thousands of civilians trapped in the port city of Mariupol, which is encircled by Russian forces.
The UN says civilians in Mariupol, Kharkiv, Melitopol and elsewhere “desperately need aid, especially life-saving medical supplies”.
People are trapped without food, running water or electricity and, in Mariupol, bodies have been buried in mass graves.
To the west, Russian forces around Kherson appear to be moving toward Mykolayiv and west toward Odesa.
Analysts say taking Odesa would be hugely significant, sealing off Ukraine from its coastline and securing a path for Russian forces from Donetsk to the Moldovan border.
New air strikes in the east
Explosions were heard in Dnipro, a key city on the Dneiper River, on Friday morning – the first time Russia has targeted it since its invasion.
Officials in the city say there were three air strikes, which hit a small shoe factory, an apartment block and a nursery. One person was killed.
Dnipro is full of heavy industry – including a rocket factory – and is strategically important as a point of convergence for Russian troops coming from the south and east.
Kharkiv, the second-largest city in Ukraine, continues to face intense aerial bombardment but Russia has not renewed attempts to take the city.
Artillery attacks on residential areas of the city are being investigated by United Nations (UN) prosecutors for possible war crimes.
Russian forces in the area have continued operations to the south east of the city, analysts say, with efforts launched to seize Izyum.
Thousands flee across borders
Since the invasion began, more than 2.5 million people have fled Ukraine, according to the UN.
It is the fastest-growing refugee crisis in Europe since World War Two.
Unicef, the UN children’s agency, believes around half of them are children and young people.
About these maps
To indicate which parts of Ukraine are under control by Russian troops we are using daily assessments published by the Institute for the Study of War with the American Enterprise Institute’s Critical Threats Project.
From 2 March this daily assessment differentiated between “Assessed Russian-controlled Ukrainian territory” and “Assessed Russian advances in Ukraine”, the latter indicating areas where Russians are believed to have launched attacks from but which they do not control.
To show key areas where advances are taking place we are also using daily updates from the UK Ministry of Defence and BBC research. To show locations where there have been attacks or explosions we are using reports that have been verified by the BBC.
The situation in Ukraine is fast moving and it is likely there will be times when there have been changes not reflected in the maps.
