BlackRock chief Larry Fink says that Western businesses should re-evaluate their ties to China.

China is Russia’s biggest war backer, BlackRock chairman and CEO Larry Fink said on Tuesday.

Fink spoke at a panel at the Berlin Global Dialogue conference when he said that Western businesses need to re-evaluate their relationship with China.

“Russia’s biggest supporter and fundamental supporter of the Russian economy is China. And that has to be at least discussed,” Fink said.