The Kremlin says it is up to Ukraine’s president to end the military conflict in the country, suggesting terms that Kyiv has repeatedly rejected, while Russian President Vladimir Putin vowed to press on with the fighting despite Western criticism.

Kremlin spokesman Dmitry Peskov said: “[Ukrainian President Volodymyr] Zelenskyy knows when it may end. It may end tomorrow if he wishes so.”

The Ukraine war has deteriorated relations between Russia and much of the rest of the world, but limited cooperation continues in some areas, such as exchanges of prisoners. On Thursday (early Friday NZ time), in a dramatic swap that had been in the making for months, Russia freed American basketball star Brittney Griner while the United States released a jailed Russian arms dealer.

The Kremlin has long said Ukraine must accept Russian conditions to end the fighting, now in its 10th month. It has demanded Kyiv recognise Crimea — a Ukrainian peninsula that Moscow illegally annexed in 2014 — as part of Russia and also accept Moscow’s other land gains in Ukraine.

Zelenskyy and other Ukrainian officials have repeatedly rejected those conditions, saying the war will end when the occupied territories are retaken or Russian forces leave them.

In an acknowledgement that it’s taking longer than he expected to achieve his goals in the conflict, Putin said on Wednesday the fighting in Ukraine “could be a lengthy process”. He described Moscow’s land gains as “a significant result for Russia,” saying — for example — that the Sea of Azov “has become Russia’s internal sea”.

During a conference call with reporters, Peskov said Moscow wasn’t aiming to grab new land but would try to regain control of areas in Ukraine from which it withdrew just weeks after incorporating them into Russia in hastily called referendums — which Ukraine and the West reject as illegal shams. After earlier retreats from the Kyiv and Kharkiv areas, last month Russian troops left the city of Kherson and parts of the Kherson region, one of the four illegally annexed Ukrainian regions.

“There are occupied territories in several new regions of the Russian Federation that need to be liberated,” Peskov said.

Putin vowed on Thursday to achieve the declared goals in Ukraine regardless of the Western reaction.

“All we have to do is make a move and there is a lot of noise, chatter and outcry all across the universe. It will not stop us fulfilling combat tasks,” Putin said.

He described Russian strikes on Ukraine’s energy facilities and other key infrastructure as a legitimate response to an October 8 truck bombing of a key bridge linking Crimea with Russia’s mainland, and other attacks the Kremlin claimed Ukraine carried out. Putin also cited Ukraine’s move to halt water supplies to the areas in eastern Ukraine that Russia controlled.

“There is a lot of noise now about our strikes on the energy infrastructure,” Putin said at a meeting with soldiers whom he decorated with the country’s top medals. “Yes, we are doing it. But who started it? Who struck the Crimean bridge? Who blew up power lines from the Kursk nuclear power station? Who is not supplying water to Donetsk?”

While stopping short of publicly claiming credit for the attacks, Ukrainian officials welcome their results and hint at Ukrainian involvement.

While earlier acknowledging delays in achieving the goals of what he calls his “special military operation,” on Thursday, Putin praised the Russian air force’s performance as “highly efficient”.

“The air force has done very well,” he said. “It has contributed significantly to the efficiency of the army’s action.”

Despite its massive numerical advantage, the Russian air force has failed to suppress Ukraine’s air defences and win full control of Ukrainian skies. It has continued to suffer losses from attacks by Ukrainian fighter jets and air defence batteries.

Heavy fighting continued on Thursday, mostly in the regions Russia annexed. Zelenskyy’s office said 11 civilians were killed and 17 wounded in Ukraine on Wednesday.

The Donetsk region has been the epicentre of the recent fighting. Russian artillery struck the town of Yampil, northeast of Sloviansk, during the distribution of humanitarian aid to civilians, Ukrainian officials said. Buildings in the city centre, in addition to the market and bus station, were damaged in Kurakhove, some 35km west of the regional capital, Donetsk, officials said.

More than 10 cities and villages in the region were shelled, including the town of Bakhmut, which has remained in Ukrainian hands during the war despite Moscow’s goal of capturing the entire annexed Donbas region bordering Russia. Swedish newspaper Svenska Dagbladet said a Swedish aid worker was killed Wednesday in a car accident while leaving Bakhmut.

In other developments:

• Russian forces have placed Grad multiple rocket launcher systems at the shut-down Zaporizhzhia Nuclear Power Plant, the Ukrainian state nuclear company Energoatom reported. The company said this is “violating all conditions for nuclear and radiation safety” and could enable Russian forces to shell the opposite bank of the Dnieper River, where each side blames the other for almost daily shelling in the cities of Nikopol and Marhanets. The Zaporizhzhia Nuclear Power Plant, Europe’s largest, has been under Russian control since the war’s early days. Russia and Ukraine accuse each other of shelling the plant and risking a radiation release.
• The International Committee of the Red Cross announced on Thursday its representatives visited Ukrainian prisoners of war that Russian forces are holding. International observers were previously not permitted access to see them. Visits to Russian prisoners of war also took place, the organisation said in a statement. The Red Cross checked the prisoners’ conditions, gave them books, personal hygiene products, blankets and warm clothes, and contacted their relatives. “I expect these visits to initiate more regular access to all prisoners of war,” said ICRC President Mirjana Spoljaric, without commenting on the treatment of prisoners.
• A Russian ship-borne air defence system knocked down a drone in the area of Sevastopol, the Russian Black Sea Fleet’s base, a regional governor said. Several attacks have been launched since the war began on Sevastopol, which is on the Crimean Peninsula, and the Black Sea Fleet.
• Russian officials said on Thursday Ukrainian forces shelled the country’s Belgorod province, which borders Ukraine. According to Governor Vyacheslav Gladkov, the shelling damaged power lines in Yakovlevo, 50km from the Ukrainian border. Though Gladkov did not report casualties or injuries, a local news Telegram channel reported that the attack had caused a fire at a military base, with several Russian military personnel killed or wounded. Ukrainian officials maintained their policy of not commenting on cross-border attacks. - AP