Perhaps the biggest known unknown in Russia’s invasion of Ukraine is China's role. But we have some clues: during the Beijing Olympics, the Chinese and Russian presidents issued a communique saying their country's relationship has "no limits."

What does that actually mean? How far will China go to keep Russian troops in the field? Promises aside, are there in fact limits?

Tough questions that are very difficult, maybe impossible to answer, but our guest on this episode of New Thinking For a New World recently offered some possibilities in Can China Bail Out Putin? Alicia Garcia-Herrero is a senior fellow at the European think-tank BRUEGEL, as well as the chief economist for Asia Pacific at Natixis, a French investment bank.

What do you think?