It was not immediately clear whether the Russian military action was the start of an invasion of Ukraine that the United States and its allies have warned about for weeks.
Beijing urged Canberra to stop maliciously spreading such information.
A spokesperson also said Indian carriers were being encouraged to operate chartered flights between India and Ukraine.
Russia's military presence at Ukraine's borders have led to one of the deepest crises in East-West relations for decades.
The republic is locked in negotiations to revive a 2015 deal that offered sanctions relief in return for curbs on its nuclear programme.
Putin also said Russia does not want war, and that is why it submitted proposals on security guarantees in Europe.
In Ukraine, Russian-backed rebels and Kyiv’s forces traded accusations that each had fired across the ceasefire line.
Critics of the BRI have raised concerns about the potential impact on host countries.
The virtual meeting took place despite growing concerns about Russia’s possible invasion of Ukraine.
With over 1.5 million visitors, Thailand was the number one destination for Russian tourists in Southeast Asia.