US President-elect Donald Trump's top security advisor called on Sunday for an end to the escalation of the war between Ukraine and Russia, and for both parties to come to the negotiating table.
"We need to bring this to a responsible end. We need to restore deterrence, restore peace, and get ahead of this escalation ladder, rather than responding to it," said Mike Waltz, Trump's pick for the influential role of US national security advisor (NSA).
