Europe 'ready' to offer security guarantees as Zelensky meets leaders in Paris

European leaders and Ukrainian President Volodymyr Zelensky are to meet in Paris on Thursday in a new effort to pile pressure on Vladimir Putin after he vowed Russia will fight on in Ukraine if no peace deal is reached. France 24's senior reporter Catherine Norris Trent and international affairs editor Philip Turle take a look at what's at stake in the talks in the French capital.