It is not yet clear whether China intends to provide Russia with that assistance, US officials familiar with the intelligence tell CNN. But during an intense, seven-hour meeting in Rome, a top aide to President Joe Biden warned his Chinese counterpart of "potential implications and consequences" for China should support for Russia be forthcoming, a senior administration official said.
The series of events underscored the growing concern among American officials at the budding partnership between Moscow and Beijing as Biden works to isolate and punish Russia for its aggression in Ukraine. While officials have said the Chinese President was alarmed at what has taken place since Russia invaded, there is little to indicate China is prepared to cut off its support entirely.
That leaves open a troubling possibility for American officials -- that China may help prolong a bloody conflict that is increasingly killing civilians, while also cementing an authoritarian alliance in direct competition with the United States.