Sergei Lavrov rules out any moves at compromise in speech that also addresses Nagorno-Karabakh dispute

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Andrey Kortunov, an adviser to the Russian foreign ministry and director of Russian international affairs council, has been on the BBC Radio 4’s Today programme discussing the strike on Russian navy’s Black Sea HQ.

Kortunov emphasised the “psychological” importance of long range missiles being used in the strike. “I think psychologically it’s important because it’s a long range missile - its destruction power is pretty significant. But militarily, I don’t think it really makes that big a damage – after all it didn’t hit any really critical military targets and the damage at least according to the reports we received is quite limited.”

Who opened investigations? Germany, Denmark and Sweden, a the leaks happened in their exclusive economic zones.

What have they found? German federal prosecutors seized objects from a sailing yacht in January and found traces of explosives.

Meanwhile, Sweden’s public prosecutor said the “primary assumption is that a state is behind it”.

What has Ukraine said? The New York Times reported in March that US officials had seen information suggesting it was done by a “pro-Ukrainian group”, without Volodymyr Zelenskiy’s knowledge. Zelenskiy has repeatedly denied Ukraine was behind the sabotage.

Could it be a false flag? Andreas Umland, an analyst at the Stockholm Centre for Eastern European Studies, views Russia as “the most likely” culprit. The Kremlin has denied responsibility.

Zelenskiy speaks to Canadian parliament after Justin Trudeau announces training for F-16 fighter pilots

Ukrainian president Volodymyr Zelenskiy delivered an impassioned speech at the Canadian parliament on Friday in which he thanked Canada’s military support to Ukraine, as well as hailed the historic and communal ties between the two countries. “You’re always on the bright side of history … I have no doubt that you will choose the side of freedom and justice,” he said.

Prime minister Justin Trudeau says Canada is going to make a longer-term, multi-year commitment that provides steady support for Ukraine, including money for 50 armoured vehicles. Canada will give an extra C$650m ($482m) in military aid to Ukraine over the next three years, Trudeau told the Canadian parliament. He will also send F-16 trainers for pilots and maintenance so Ukraine is able to maximise its use of donated fighter jets.

A Russian missile strike on civilian infrastructure in Kremenchuk in the central Poltava region of Ukraine killed one person and injured 15 others, governor Dmytro Lunin said on Friday via Telegram. He said one child was among the injured and that Ukrainian air defences downed one of the missiles launched. These claims are yet to be independently verified.

The Russian deputy prime minister, Alexander Novak, held a meeting with Russian oil company managers on Friday to discuss the domestic fuel market, the government said. Russia temporarily banned exports of gasoline and diesel to all countries outside a circle of four ex-Soviet states with immediate effect, the government said on Thursday, without a specified end date.

US president Joe Biden has told his Ukrainian counterpart Volodymyr Zelenskiy that the US will provide a small number of long-range missiles to help in Ukraine’s fight against Russia, three US officials and a congressional official told NBC News on Friday. The officials did not confirm when the missiles would be delivered and remain anonymous as they have not been authorised to speak on the subject publicly.

A Ukrainian air force spokesperson reportedly said that he had hoped the missile strike on the Russian Black Sea fleet HQ earlier on Friday had left a bigger hole in the building. Air force spokesperson, Yuriy Ignat, speaking on Ukrainian television, said that while he was pleased by the result of the strike, he had hoped the effects would be more dramatic. “I wanted a bigger hole to be honest,” he said.

Ukraine’s military said its forces had “successfully” struck the headquarters of Russia’s Black Sea navy in the Crimean port of Sevastopol on Friday. “On 22 September close to 12:00 (0900 GMT) Ukraine’s defence forces successfully struck the headquarters of the Russian Black Sea fleet command in the temporarily occupied Sevastopol,” Ukraine’s military said on Telegram.

Ukraine president addresses Canadian parliament; Canada will send F-16 trainers for pilots

• What we know on day 576 of the invasion

Ukraine’s infrastructure minister confirmed on Friday the departure of the second cargo vessel with grain from Ukraine’s Chornomorsk seaport.

The vessel Aroyat “left the port Chornomorsk after loading Ukrainian wheat for Egypt,” Reuters reports Oleksandr Kubrakov posted to social media.

This is Martin Belam taking over the live blog in London. You can contact me at martin.belam@theguardian.com.

Latest high-profile attack on Russian forces based on annexed peninsula targets base in Sevastopol

• Russia-Ukraine war – latest news updates

A Ukrainian missile attack has hit the headquarters of Russia’s Black Sea fleet in occupied Crimea, the latest high-profile Ukrainian strike on the annexed peninsula.

Russia’s defence ministry said that one military serviceman was missing as a result of the assault, which hit the navy headquarters in the port city of Sevastopol.