The West needs to brace for a protracted conflict between Ukraine and Russia, NATO Secretary General Jens Stoltenberg said on Sunday, insisting that arms shipments to Kiev must continue.

Kiev said Friday it repelled a nighttime drone attack from Russia, a day after Moscow launched a new wave of missile strikes in the run-up to New Year celebrations.

Russian Foreign Minister Sergey Lavrov has alleged that up to “hundreds” of American servicemen are deployed to Ukraine, claiming that US soldiers, military advisers, and intelligence officers have long been direct participants in the conflict.

Ukraine poses a global challenge to the international community, as the country is being used by NATO as a vehicle for the uncontrolled sharing of cyberweapons, Russian Deputy Foreign Minister Oleg Syromolotov said on Wednesday.

The war on Ukraine did not pause for Christmas despite Russian President Vladimir Putin saying he was open to negotiations, with his forces launching more than 40 rocket attacks on Christmas Day, Ukraine's military said on Monday.

Ukraine is preparing to take official steps to prove that Russia's presence on UN Security Council is "illegal" and have it removed from the body, Kyiv announced on Tuesday.

Russia sees Greece supplying Ukraine with S-300 air defense systems as a “hostile” action towards Moscow, a government official said on Monday.

Japan on Friday unveiled its biggest military build-up since World War Two with a $320 billion plan that will buy missiles capable of striking China and ready it for sustained conflict, as regional tensions and Russia's Ukraine invasion stoke war fears.

Russia relaunches missile attacks on Ukraine as the West tried to limit Moscow's ability to finance its invasion by imposing a price cap on Russian seaborne oil.

The administration of US President Joe Biden is contemplating a drastic expansion of the training program for Ukrainian forces, which is expected to take place at a US military base in Germany, CNN reported on Wednesday, citing sources.

The US Army has announced that a $1.2 billion contract to produce six National Advanced Surface-to-Air Missile Systems (NASAMS) for Ukraine, amid its conflict with Russia, has been awarded to the defense conglomerate Raytheon.

The United States government is mulling over whether to provide Patriot missiles to Ukraine’s armed forces, the Defense Department said, weeks after Kiev explicitly requested the pricey weapon system.