SECONDARY SANCTIONS
We don't yet know if Donald Trump's shift in stance on Russia is a sea change or "part of a whiplash effect", the director of military sciences at the Royal United Services Institute says.
Speaking to Sky's Matt Barbet, Matthew Savill notes that the Russian economy has proved pretty resilient in the face of sanctions so far.
He says that Trump is suggesting secondary sanctions - meaning he will take action on countries that deal with Russia, such as those still buying Russian fossil fuels and energy supplies.
"We need to be a bit cautious as to whether this is a sea change in Trump's opinion or if it's just another part of a whiplash effect as he veers backwards and forwards," Savill says.
"His overriding goal is to get credit for ending the fighting."
