Ukraine in maps: Tracking the war with Russia

'Tactically significant' advances

Ukraine has continued counter-offensive operations, and made advances in and around two villages in the south east of the country.

Analysts at the US-based Institute for the Study of War (ISW) say the advances near Robotyne and Urozhaine are "likely tactically significant because of the structure of Russian defensive lines" and note that Russian forces have dedicated significant effort to hold the settlements.

A Ukrainian colonel has said the Russian defensive line in southern Ukraine comprises a line of minefields that is several kilometres wide, a second line of artillery and personnel and a third line of rear positions.

The ISW says the Ukraine's recent advances north and north east of Robotyne may allow Ukrainian forces to begin operating in the areas behind the densest minefields - although it adds it has no way to assess the width of the minefields.

Kyiv's generals have previously warned that fast results are almost impossible because of Russia's fortified defensive lines and rows of minefields.

The battle for Bakhmut

Ukrainian forces have also continued operations around what is left of the city of Bakhmut - which has endured some of the heaviest fighting of the war and has been under Russian control for several months.

Ukraine's General Staff reported that its forces had entrenched themselves in new positions south of the city this week.

It also said Russian forces had conducted unsuccessful offensive actions near Bohdanivka about 7km (4.3 miles) north west of the city and Bila Hora and 14km (8.7 miles) south west of it.

Russia's ongoing missile attacks

Russia has continued its missile and drone attacks on Ukraine, in particular targeting Ukraine's port and grain infrastructure.

Moscow has been launching near-constant attacks on Ukraine's grain infrastructure since Russia withdrew from a landmark grain deal.

The deal was struck in July 2022 between Russia and Ukraine - brokered by Turkey and the UN - allowing cargo ships to sail along a corridor in the Black Sea 310 nautical miles long and three nautical miles wide.

After repeatedly targeting export hubs on the Black Sea, Russia has now turned its missiles and drones on ports on the Danube, which experts say Ukraine will need to export grain into neighbouring Romania.

The port of Reni - about 200m from the border with Nato member Romania - is among those to have been hit in air strikes, including an attack on Wednesday.

More than a year of fighting

Russia's invasion began with dozens of missile strikes on cities all over Ukraine before dawn on 24 February 2022.

Russian ground troops moved in quickly and within a few weeks were in control of large areas of Ukraine and had advanced to the suburbs of Kyiv.

Russian forces were bombarding Kharkiv, and they had taken territory in the east and south as far as Kherson, and surrounded the port city of Mariupol.

But they hit very strong Ukrainian resistance almost everywhere and faced serious logistical problems with poorly motivated Russian troops suffering shortages of food, water and ammunition.

Ukrainian forces were also quick to deploy Western supplied arms such as the Nlaw anti-tank system, which proved highly effective against the Russian advance.

By October the picture had changed dramatically and having failed to take Kyiv, Russia withdrew completely from the north.

More than a year since the invasion, Ukraine is now hoping its latest counter-offensive can turn the war in its favour.

By David Brown, Bella Hurrell, Dominic Bailey, Mike Hills, Lucy Rodgers, Paul Sargeant, Alison Trowsdale, Tural Ahmedzade, Chris Clayton, Kady Wardell, Mark Bryson, Zoe Bartholomew, Sean Willmott, Sana Dionysiou, Joy Roxas, Gerry Fletcher, Jana Tauschinsk, Debie Loizou, Simon Martin and Prina Shah.

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 updates from the UK Ministry of Defence and BBC research.

The situation in Ukraine is often fast moving and it is likely there will be times when there have been changes not reflected in the maps.

-bbc