U.S. President Donald Trump said on Oct. 5 that Russian President Vladimir Putin’s offer to voluntarily maintain limits on nuclear weapons "sounds like a good idea."

An estimated 1,000 to 5,000 Cuban fighters are actively participating in Russia's invasion of Ukraine, Reuters reported Oct. 5, citing an internal U.S. State Department cable obtained by the outlet.

Drones struck the Kirishi oil refinery in Russia's Leningrad oblast overnight on Oct. 4, sparking a fire that was later extinguished, officials and local media reported.

Russia launched nearly 6,900 drones at Ukraine in September, Commander-in-Chief Oleksandr Syrskyi reported on Oct. 2.

Ukraine’s Foreign Ministry announced Oct. 2 that it is severing diplomatic relations with Nicaragua, citing Managua's recognition of Crimea and four partially occupied Ukrainian regions as part of Russia.

Speaking at the Valdai Discussion Club in Sochi, Russia, on Oct. 2, President Vladimir Putin mocked European concern over drone sightings, denied stationing troops on the Finnish border, and dismissed NATO as a "paper tiger."

Ukrainian specialists arrived in Denmark on Sept. 29 to join Danish forces in counter-drone exercises after recent airspace violations.

Imports of Russian oil to Turkey, one of Moscow's top buyers, have fallen due to competition from other suppliers, sanctions, and pressure from the United States, Reuters reported Sept. 26.

The Ukrainian military struck three gas distribution stations in the Russian-occupied part of Luhansk Oblast overnight on Sept. 25, according to military officials.

German Chancellor Friedrich Merz called on the EU to use frozen Russian assets to provide Ukraine with a $160 billion loan, saying he is "advocating the mobilization of financial resources on a scale that will secure Ukraine's military resilience for several years."

European diplomats warned Russian officials this week that NATO is prepared to respond to further airspace violations with force, including by shooting down Russian planes, Bloomberg reported Sept. 25.

Moldovan authorities detained 74 people on Sept. 22 who are accused of working with Russian intelligence to plan unrest during the Sept. 28 parliamentary elections.

All flights at Denmark's Copenhagen Airport were halted after police reported two to three large drones in the area.

The United States would help secure peace after Russia's war in Ukraine ends, U.S. President Donald Trump said in an interview aired Sept. 18 on Fox News.

Dmitry Kozak, a longtime associate of Russian President Vladimir Putin and one of the few senior Russian officials to oppose the invasion of Ukraine, has resigned from his post as the Kremlin's deputy chief of staff.