US officials say Russia has asked China for military assistance in Ukraine.  

The United States' National Security Adviser is meeting with Chinese diplomats, reportedly planning to warn them of the consequences of helping Russia.  

Rand Corporation Senior Political Scientist Raphael Cohen told Kate Hawkesby China has warming ties with Russia - but also abstained from a UN vote condemning Russia. 

“We’re getting right now mixed signals from Beijing, I think from a Western standpoint you have to think, what if China does decide to get involved.” 

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