The Kremlin has said it is preparing retaliatory measures after Ukraine twice fired US-made Atacms missiles into Russia in the last three days.

Moscow said both strikes targeted air defence positions in the Kursk region and claimed on both occasions either one or two missiles reached their targets, while most were shot down.

Helena Smith is the Guardian’s correspondent in Greece, Turkey and Cyprus

Nato secretary general Mark Rutte has underscored the need “to go further to change the trajectory of the conflict” in Ukraine.

Stopping over in Athens as he conducted his first regional tour of the eastern Mediterranean, the Nato leader said it was vital alliance members delivered on commitments made at Nato’s July Summit in the US.

“Our support for Ukraine has kept them in the fight, but we need to go further to change the trajectory of the conflict,” he said before holding a working lunch with the Greek prime minister Kyriakos Mitsotakis. “We need to provide critical air defences and deliver on the commitments made at the Nato summit in Washington. The new command, the Nato command to coordinate security assistance and training [NSATU], the financial pledge of 40 billion euros in 2024, and further measures to bring Ukraine closer to Nato.”

Highlighting the importance of strengthening the bloc’s “deterrence and defence,” Rutte said it was also critical that investment and production in the arms industry was boosted.

Greece, among the highest net contributors to the alliance – allocating 3 % of its GDP to defence – is also home to a growing defence industry, a reflection of the nation’s historic rivalry with Nato-member Turkey and the seriousness with which it takes its role on the Alliance’s “vulnerable” south eastern flank.

On Tuesday, Mitsotakis said he and Rutte saw eye to eye on the need for higher EU defense spending.

“We agreed on one of the fundamental priorities for all the allies, the need to boost our common defence, a target which requires a strong defence industry, significant investments,” he said.

Last month, Athens signed a bilateral security agreement with Ukraine with Rutte praising the country’s decision to “help accelerate F-16 training for Ukrainian pilots and technicians”. It was, he said, a move that would “strengthen their hands in this brutal war.”

“All of this is essential in an increasingly dangerous environment,” the Nato chief said. He added:

In pursuing its illegal war in Ukraine, Russia makes use of North Korean weapons and troops, Iranian drones and Chinese dual use goods for its defence industry.

This is a dangerous expansion of the war and a challenge to global peace and security … The good news is that we have in Nato the alliance we need to defend every inch of our territory.

• Russia said it was expelling a British diplomat that it accused of espionage and summoned London’s ambassador to the foreign ministry in Moscow. According to the FSB, Russia’s security service, the British diplomat replaced one of six diplomats expelled in August, also on espionage charges. It said the diplomat provided false information on his documents and carried out espionage and sabotage activities.

• Russian forces staged their largest ever drone attack on Ukraine overnight, cutting power to much of the western city of Ternopil and damaging residential buildings in Kyiv region, Ukraine’s officials said.

• The EU is proposing to sanction several Chinese technology firms for aiding Russia’s war against Ukraine, according to draft documents seen by the Guardian. The EU is targeting seven companies from China and Hong Kong, as well as firms based in Russia, Serbia, Iran, Thailand and the United Arab Emirates, for “supporting Russia’s military industrial complex”.

• The UK government recently supplied Ukraine with dozens more Storm Shadow cruise missiles, sources have told Bloomberg. The deliveries were not publicly announced and took place several weeks ago, according to the report.

• Lt Gen Alexander Sanchik has reportedly been appointed acting commander of Russia’s so-called “south” group of forces, one of the large army units involved in Moscow’s war on Ukraine.

• Russian forces captured the village of Kopanky in Ukraine’s northeastern Kharkiv region, the Interfax news agency cited Russia’s defence ministry as saying.

• Russia confirmed it has detained a British man it captured fighting for Ukraine in Kyiv’s offensive into Russia’s western Kursk region. A court in the region said it had on Monday ordered James Scott Rhys Anderson be remanded in custody, alleging he had “participated in armed hostilities on the territory of the Kursk region”.

There are reports of an overnight Russia drone attack overnight cutting power to much of Ternopil, a major city in western Ukraine.

As well as damaging residential buildings in the Kyiv region, the attack damaged the power grid in Ternopil and cut power to around 70% of the region, governor Vyacheslav Nehoda said. Energy workers are gradually restoring Ternopil’s electricity supply.

Ternopil, about 220 km (134 miles) east of Nato-member Poland, and the surrounding region, had a population of more than a million before the war. “The consequences are bad because the facility was significantly affected and this will have impact on the power supply of the entire region for a long time,” Nehoda said.

Russia has expelled a British diplomat, accusing him of espionage, the Interfax news agency cited Russia’s FSB security service as saying earlier today. We are not sure of who the diplomat is yet but will bring you the latest as details come to light.