US President Joe Biden has issued a warning, saying American military forces may enter into a direct conflict with Russia if Ukraine loses the war.

In a statement released on Friday, Biden claimed that Russian President Vladimir Putin "seeks to obliterate Ukraine and subjugate its people. He must be stopped.”

Biden's warning came after Russia launched fresh airstrikes against Ukraine, targeting the Ukrainian military facilities in the south, west, and east of the country, with heavy damage reported at multiple sites.

The heavy overnight strike by Russia took place as the US Congress remains deadlocked over whether to provide further military support to Kiev in the US-led Western countries' proxy war against Russian troops in Donbas which will enter its third year in late February 2024.

Biden said Russia’s latest airstrikes on Ukraine showed Russian leadership maintained unwavering resolve to achieve its set objective in Ukraine.

“It is a stark reminder to the world that, after nearly two years of this devastating war, Putin’s objective remains unchanged."

The president said the Russians had used drones and missiles, including those with hypersonic capability, for the latest strike.

He called on Congress to provide additional military aid for Ukraine, noting Kiev used air defense systems from the Americans and their allies to try to defend itself against the heavy Russian airstrikes.

“Unless Congress takes urgent action in the new year, we will not be able to continue sending the weapons and vital air defense systems Ukraine needs to protect its people. Congress must step up and act without any further delay,” Biden insisted.

The US has already delivered multiple huge shipments of weapons and munitions to Kiev to fight the war against Russia. But, it has been to no avail.