US shuts Kyiv embassy due to 'potential significant air attack'

The United States shut its embassy in Kyiv on Wednesday morning due to "specific information of a potential significant air attack" amid jitters in the capital over possible Russian retaliation a day after a big Ukrainian strike.

The Italian and Greek embassies said they had also closed their doors after the unusual US warning, while the French embassy remained open but urged its citizens to be cautious.

Air raid sirens briefly sounded in Kyiv in the afternoon, as the air force told people to seek shelter because of a missile threat. Senior officials told Ukrainians not to ignore the alert.

Ukraine on Tuesday used US ATACMS missiles to attack an arms depot inside Russia, making use of newly granted permission from the outgoing administration of US President Joe Biden on the 1,000th day of Russia's full-scale invasion of Ukraine.

Russia has been signalling to the United States and its allies for weeks that if they give permission to Ukraine to strike deep into Russian territory with Western-supplied missiles then Moscow will consider it a major escalation.

"Out of an abundance of caution, the embassy will be closed, and embassy employees are being instructed to shelter in place," the US Department of State Consular Affairs said in a statement on the embassy's website.

"The US Embassy recommends US citizens be prepared to immediately shelter in the event an air alert is announced."

The Kremlin said it had no comment. Russian foreign intelligence chief Sergei Naryshkin said in an interview published on Wednesday that Moscow would retaliate against Nato countries that facilitate long-range Ukrainian missile strikes against Russian territory.

Ukraine's military intelligence agency said on Wednesday that a Russian military command post had been "successfully struck" in the town of Gubkin in Russia's Belgorod region, around 168 km from the border with Ukraine.

The Ukrainian statement raised the possibility of a second ATACMS strike, though it did not specify who carried out the attack, when it took place or the type of weapon used. Ukraine has also used drones for deep strikes against targets in Russia.

The war is at a volatile juncture, with a fifth of Ukrainian territory in Russian hands, North Korean troops deployed in Russia's Kursk region and doubts over the future of Western aid as US President-elect Donald Trump returns to the White House.

The military said it shot down 56 drones and lost track of 58 more as a result of what it described as "active counteraction". Six drones also flew out of Ukraine's air space and two out of six missiles were shot down, it added.