Russia shells Ukrainian border villages in Chernihiv Oblast.

Ukraine's Air Force said Russian forces launched 157 Shahed-type attack and decoy drones overnight, along with six S-300 guided missiles and an X-59 air-launched missile.

"If any troops appear there, especially now, during the fighting, we assume that they will be legitimate targets for destruction," Russian President Vladimir Putin said.

"Gasoline (in Russia) is becoming scarce, while gas and oil are quickly running out," Ukraine's top drone warfare commander, Robert "Madyar" Brovdi, wrote.

Russian independent media outlet Mediazona, in collaboration with the BBC Russian service, has confirmed the identities of 125,681 Russian military personnel killed in Ukraine.

"Germany, Italy, and Poland are definitely among Ukraine's security guarantors. We won't go into details yet, but we already have an understanding (of cooperation)," President Volodymyr Zelensky said at the joint press conference with French President Emmanuel Macron during the Paris summit.

U.S. President Donald Trump is expected to issue an executive order on Sept. 5 to rename the U.S. Department of Defense to the Department of War, various media outlets, citing sources in the White House, reported.

The Trump administration is preparing to phase out funding for U.S. security assistance programs for European countries bordering Russia, FT reported Sept. 4. The move is part of a broader push for NATO allies to increase their defense spending.

A Ukrainian citizen was among those killed in a funicular accident in Lisbon, Portugal, on Sept. 3, the Foreign Ministry confirmed to Hromadske.

"First, Russians mined (Chernihiv) Oblast with explosives and mines. Now they are killing people, civilians, who are risking their lives to clean up our land from the consequences of the Russian invasion," Viacheslav Chaus, the governor of Chernihiv Oblast, wrote.

In light of a potential gas shortage, Putin suggested switching to coal reserves, which "will last for almost a thousand years," Putin said, as quoted by The Moscow Times.

The drones left Polish territory without causing damage, Poland's General Staff Chief Wieslaw Kukula said.

The comments come a day after Russian President Vladimir Putin held talks with North Korean dictator Kim Jong Un in Beijing.