Donald Trump insisted that NATO nations should feel emboldened to shoot down Russian planes if they enter their countries' airspace.
It comes after Russian drones crossed into Polish airspace this week amid the ongoing war with Ukraine.
Speaking alongside Ukrainian President Volodymyr Zelensky at United Nations headquarters on Tuesday, Trump suggested that the U.S. might back-up North Atlantic Treaty Organization (NATO) countries forced to take action if Russia provokes them.
'Do you think that NATO countries should shoot down Russian aircraft if they enter their airspace?' a reporter asked Trump.
'Yes I do,' he replied.
