Ukraine is stepping up its operations to recapture occupied territory as Russian forces continue attempts to advance in the east.
Here are the latest developments:
Ukraine and Russia have accused each other of shelling the Zaporizhzhia nuclear plant
In the east, Russian forces are trying to advance in Donetsk
Ukrainian forces have been attempting to retake territory in Kherson
A small number of vessels carrying grain have left the port of Odesa
Clashes in the south
In recent days, Ukraine and Russia have accused each of shelling the Zaporizhzhia Nuclear Power Plant in the south of the country.
According to some reports, the plant has been used by Russian forces for storing explosives and ammunition.
The boss of Ukrainian state nuclear power company Enerhoatom says 500 Russian soldiers are at the site, and Russia has positioned rocket launchers there.
Also in the south, Ukraine has been trying to take back territory in Kherson using new long-range artillery to target bridges across the Dnipro River.
According to the UK Ministry of Defence (MoD), two recent attacks on the Antonivskiy Bridge have left Russian troops “virtually cut off”.
Map showing the southern city of Kherson and its surrounding area
Kherson was the first city in Ukraine to be taken by Russian forces after their invasion in February. The MoD said its loss would “severely undermine Russia’s attempts to paint the occupation as a success”.
To the west of Kherson city, a recent Russian attempt to advance east of Mykolaiv city was repulsed by Ukrainian forces.
In the southern port of Odesa, which has remained under Ukrainian control throughout the conflict, a small number of vessels have been allowed to leave carrying grain, after an agreement was reached with Russia.
Under the deal, Russia agreed not to target ports while grain was in transit, while Ukraine pledged to guide cargo ships through waters that have been mined.
Despite Russian missile strikes on the port in Odesa less than 24 hours after the deal was signed, ships are continuing to transport Ukrainian cargo.
Map showing the south of Ukraine
Russia edging forward in east
Russian officials have said their forces are fighting for the “complete liberation” of the Donbas, which broadly refers to Ukraine’s eastern regions of Donetsk and Luhansk, where Russian-backed separatists held significant territory before the invasion.
Russian forces now control all of the Luhansk region and they are continuing to make small advances in the Donetsk region.
Map showing control of the Donbas region before and after the invasion
Having captured the strategically important cities of Severodonetsk and Lysychansk in recent weeks, Russian troops are now focussing the efforts in the region on the nearby cities of Siversk and Bakhmut.
However, according to Ukrainian officials Russia’s offensive in the east has been hindered in recent weeks by movement of its troops to defend Kherson from an expected Ukrainian counter-offensive.
Map showing the east of Ukraine
Western weapons boost Ukraine
President Volodomyr Zelensky has called on Western countries to send Ukraine more weapons, telling a recent meeting of Nato that his forces needed “much more modern systems” to help them “break the Russian artillery advantage”.
Several Western shipments of heavy weaponry – such as US multiple rocket launch systems – have made it to the front line in recent weeks, allowing Ukraine to attack from greater range.
Retired British Army officer General Sir Richard Barrons told the BBC that he had no doubt that the arrival of “some Western weapons has made a difference” to the Ukrainian side.
He said Ukraine’s new longer-range weapons had forced Russia to “reorganise how they operate” but he warned that there was “still a long way to go” in the conflict.
The MoD believes that Russia’s use of pyramidal radar reflectors near the recently damaged bridges in Kherson reflects “the threat Russia feels from the increased range and precision of Western-supplied systems”.
What military equipment is the world giving Ukraine?
Map showing areas of Ukraine that remain under Russian military control
Russia invaded Ukraine on 24 February, but Ukrainian forces retook large areas around Kyiv in early April after Russia abandoned its push towards the capital.
Areas in the west of the country, including Lviv, have seen missile attacks but no attempt by Russian forces to take and occupy ground.
The Russians have suffered heavy losses since the invasion began and significant quantities of Russian weaponry have also been destroyed or captured.
By David Brown, Bella Hurrell, Dominic Bailey, Mike Hills, Lucy Rodgers, Paul Sargeant, Alison Trowsdale, Tural Ahmedzade, Mark Bryson, Zoe Bartholomew, Sean Willmott, Sana Dionysiou, Joy Roxas, Gerry Fletcher, Jana Tauschinsk, Debie Loizou, Simon Martin and Prina Shah.
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.
To show key areas where advances are taking place we are also using daily updates from the UK Ministry of Defence and BBC research.
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.