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The latest developments in Russia’s war on Ukraine. All times EDT.

10:30 a.m.: President Joe Biden has warned Russian President Vladimir Putin against using chemical or tactical nuclear weapons in the war in Ukraine.

In an interview with CBS News to air September 18, Biden said, “Don’t. Don’t. Don’t. You will change the face of war unlike anything since World War II.”

Interviewer Scott Pelley asked what the U.S. response would be in such a case.

“You think I would tell you if I knew exactly what it would be?” Biden said. “Of course, I’m not gonna tell you. It’ll be consequential.”

And he added, “They’ll become more of a pariah in the world than they ever have been. And depending on the extent of what they do will determine what response would occur.”

9:55 a.m.: Ukrainian Prime Minister Denys Shmyhal thanked the United States on Saturday for its support after Ukraine received a further $1.5 billion in international financial assistance.

“The state budget of Ukraine received a grant of $1.5 billion. This is the last tranche of $4.5 billion aid from the United States from @WorldBank Trust Fund,” Shmyhal tweeted.

He said the funds would be used to reimburse budget expenditures for pension payments and social assistance programs.

9:30 a.m.: Andriy Yermak, President Voldymyr Zelenskyy’s chief-of-staff, posted photos on Twitter, showing graves allegedly containing the bodies of a six-year-old girl and her parents reportedly murdered by Russian forces, in Izium, Kharkiv region.

“The Russians are killing entire Ukrainian families,” Yermak wrote. “Izyum, Olesya, 6 years old. Killed by Russian terrorists. Her parents are buried nearby.”

The Ukrainian military general staff on Friday published a photo of a recently discovered grave site in Izium, with Zelenskyy saying that many of the already exhumed bodies showed signs of torture, including broken limbs and ropes around their necks. He said more than 440 graves have been found at the site but that the number of victims was not yet known.

Ukraine’s Ministry of Reintegration suggested that the number of victims in Izium could be higher than in Bucha, another formerly occupied town where Russian forces were reported to have committed atrocities. Ukrainian authorities have said 458 bodies were found there after a 33-day Russian occupation.

9:00 a.m.: Spain has sent five cargo planes with artillery ammunition to Ukraine, The Kyiv Independent reports. Ukraine’s general staff says Spain has delivered 75 pallets of ammunition for large-caliber artillery systems to Ukraine over the “last several days,” and is also delivering military cold weather gear to Ukraine.

“[This] is an example of Spain’s decisive and constant support of the Ukrainian people,” said Spanish Defense Minister Margarita Robles.

8:15 a.m.: Russian forces are building fortifications in Luhansk, transferring troops and equipment to the area of Svatove, and have turned off cable internet for the population, Serhii Haidai, Head of the Luhansk region military administration, Ukrainska Pravda reports.

“After the mobile internet, cable internet is also being turned off in the territory of Luhansk Oblast (region). The population of the so-called “LPR” (self-proclaimed “Luhansk People’s Republic”) is isolated from the outside world,” Haidai said in a message on Telegram.

7:50 a.m.: Donetsk region Governor Pavlo Kyrylenko reported Saturday that a Russian attack had damaged a thermal power plant in Sloviansk, and that firefighters were on the scene, The Kyiv Independent reported. The shelling also impacted the water supply in the neighboring town of Mykolaivka, according to Kyrylenko.

5:17 a.m.: In its latest Ukraine assessment, the Institute for the Study of War, a U.S. think tank, said the discovery of mass graves and torture chambers in liberated Izyum confirm previous ISW assessments that the Bucha atrocities were emblematic of Russian activities in occupied areas rather than an anomaly.

Ukrainian forces, the assessment said, captured all of Kupyansk City on Sept. 16, continuing offensive operations east of the Oskil River. They also reportedly shelled targets in Valuyki, Belgorod Oblast, Russia, overnight Sept. 15-16.

4:19 a.m.: The latest intelligence update from the U.K. defense ministry said Ukraine continues offensive operations in the north-east of the country while Russian forces have established a defensive line between the Oskil River and the town of Svatove.

3:15 a.m.: Russia has barred another 41 Australian nationals from entering the country, the foreign ministry said on Friday, according to Reuters.

Among the individuals added are journalists from Australia’s Sky News, ABC, 7NEWS and Nine News, as well as arms industry executives.

2:16 a.m.: The defense ministers of Germany and Greece have agreed on a deal to deliver 40 BMP-1 tanks to Ukraine, the German Defense Ministry said Friday, according to Reuters.

1:13 a.m.: Russian President Vladimir Putin on Friday said he had not yet decided whether to personally attend a summit of the Group of 20 nations in Indonesia in November, Reuters reported.

However, Putin, speaking to reporters in Uzbekistan after a regional summit, said Russia would be represented at the meeting.

12:02 a.m.: Russian President Vladimir Putin said Friday there were no plans to adjust Russia’s military operations in Ukraine despite a counter-offensive, saying Moscow was in no rush to finish the campaign, Agence France-Presse reported.

“The plan is not subject to adjustment,” Putin told reporters during a regional summit in Uzbekistan.

“Our offensive operations in Donbas itself do not stop. They are going at a slow pace … the Russian army is occupying newer and newer territories,” Putin said.

“We are not in a hurry … there are no changes.”

Putin said Russia was “not fighting with a full army” but only contract soldiers and said the main goal of the campaign remained “the liberation of the entire territory of Donbas.”

He accused Ukrainian forces of attempts to carry out “terrorist acts” and damage Russian civilian infrastructure.

“We are really quite restrained in our response to this, for the time being,” Putin said. “If the situation continues to develop in this way, the response will be more serious.”

Some information in this report came from Agence France-Presse and Reuters.