Chinese president Xi Jinping told Donald Trump that Russia's Vladimir Putin could come to regret invading his smaller neighbour Ukraine, according to a new report on last week's summit in Beijing.
The report emerged just hours before Putin is due to arrive in Beijing for his own two-day summit with Xi.
The FT reported that Xi made the remarks during wide-ranging talks between the US and Chinese delegations in Beijing, while Trump suggested that the three leaders should co-operate against the International Criminal Court.
Putin said ahead of his visit today that Russia and China are ready to support each other on a wide range of issues, including national unity and protection of sovereignty.
The Kremlin says the two sides will discuss the proposed Power of Siberia 2 gas pipeline, which could one day deliver an additional 50 billion cubic metres (bcm) of gas per year from Russia's Arctic gas fields via Mongolia to China.