NATO chief Stoltenberg warns China against delivering arms to Russia: '... support illegal war'

“China should not provide lethal aid to Russia, that would be to support an illegal war,” said Stoltenberg.

NATO Secretary-General Jens Stoltenberg warned China on Tuesday against supplying lethal weapons to Russia, as leaders of both countries were meeting in Moscow for talks.

Russian President Vladimir Putin meets with China's President Xi Jinping at the Kremlin in Moscow on March 21. (AFP)

"We haven't seen any proof that China is delivering lethal weapons to Russia but we have seen some signs that this has been a request from Russia, and that this is an issue that is considered in Beijing by the Chinese authorities," Stoltenberg told reporters in Brussels.

“China should not provide lethal aid to Russia, that would be to support an illegal war.”