As the war enters its 826th day, these are the main developments.

Fighting

• At least three people were killed and 16 injured after Russia struck three sites, including a five-storey apartment building, in Kharkiv, Ukraine’s second-largest city, at about midnight local time (21:00 GMT). Regional Governor Oleh Syniehubov said at least two children were among the injured. Earlier in the day, at least four people were injured in Russian shelling of the city.
• Ukraine’s top military commander Colonel General Oleksandr Syrskii said Russia was continuing to send additional regiments and brigades from other areas and training grounds to boost its forces along two main lines of attack in the north of the Kharkiv region, where Moscow launched an offensive earlier this month.
• United States officials, who declined to be named because of the sensitivity of the issues, told multiple media outlets that President Joe Biden had decided to allow Kyiv to use US-supplied weapons at targets inside Russia but only on the border with the northeastern Kharkiv region.
• Ukraine’s GUR military intelligence service said its forces destroyed two Russian patrol boats using naval drones off Crimea, which Russia occupied and annexed from Ukraine in 2014. Moscow said earlier it had destroyed two naval drones “heading for Crimea”.
• Russia fired a total of 51 missiles and drones at “military facilities and critical infrastructure”, across Ukraine, the air force said. Air defences destroyed seven missiles and 32 drones, it added.

Politics and diplomacy

• The 27 members of the European Union agreed to impose “prohibitive” tariffs on grain imports from Russia and Belarus in a bid to cut off Moscow’s funding for its war on Ukraine. Grain in transit to other parts of the world through Europe will not be affected by the tariffs.
• Ukrainian lawmakers and journalists called for an investigation into political pressure on the country’s state news agency Ukrinform. Oleksiy Matsuka, the agency’s head, stepped down this week after being accused of leading an editorial policy exclusively backing the presidential administration. He was replaced by a former army spokesman, Serhiy Cherevaty, deepening concerns about official censorship.
• Tharaka Balasuriya, Sri Lanka’s junior foreign minister, said Colombo would start talks with Moscow to secure the release of hundreds of citizens, mostly former soldiers, who it believes were duped into joining Russian forces in Ukraine. It is also seeking the release of about a dozen men being held as prisoners of war in Ukraine. At least 16 men have been killed in the fighting.
• Russia’s FSB security service said it detained four people in Crimea who were allegedly involved in a series of sabotage attacks planned by Ukrainian special services to destroy railway lines in the occupied peninsula. A fifth man, reported to be the group’s leader by Russian news agencies, was killed when the FSB tried to capture him.

Weapons

• German Defence Minister Boris Pistorius made an unannounced visit to Ukraine’s southern city of Odesa where he held talks with Ukrainian Defence Minister Rustem Umerov and promised Ukraine a new package of military aid worth 500 million euros ($540m), a spokesperson for the ministry told the AFP news agency. The package includes “artillery, air defence [and] drones”, he added.
• A Czech official said Ukraine would receive between 50,000 and 100,000 shells in June under a Czech-led ammunition supply initiative.