Sullivan to deliver Biden's message to Zelenskyy in Davos — media

US National Security Advisor Jake Sullivan will deliver a message from US President Joe Biden during a conversation with Ukrainian President Volodymyr Zelenskyy in Davos

Bloomberg reported the information.

According to the outlet, "the White House wants Ukraine to change strategy in fighting the Russian invaders: from offense to defense."

"Zelenskyy understands why that makes sense, although he won’t like to hear it or to say so publicly," Bloomberg said. 

The outlet also noted that the President of Ukraine should send a response to Biden "and to remind the US Congress — that Ukraine can only play proper defense if the US and its allies guarantee that it has the wherewithal."