What’s President Trump’s next move in the ceasefire negotiations? What would happen if Russia launched a missile from the Black Sea into Ukraine? And what is President Putin up to in the Arctic? James is joined by BBC Verify’s Olga Robinson and diplomatic correspondent James Landale to answer these questions and more.

The deal is already under question, as the European Union made clear on Thursday that it will not honor terms that the Kremlin insists must be implemented for the arrangement to go forward.

The United States will evaluate demands made by Russia after Moscow had agreed "in principle" to a U.S.-brokered ceasefire with Ukraine in the Black Sea to allow safe navigation, U.S. Secretary of State Marco Rubio said on Wednesday.