The prime minister will be among the European leaders at an emergency summit in Paris later.
Keir Starmer says any peace deal must safeguard Ukraine's sovereignty over the long term.
Former deputy chief of UK defence staff Lieutenant General Sir Simon Mayall says Britain will need a huge shift on defence spending.
IN: "The instinct...
OUT: ...society."
DUR: 17 seconds
http://www.fsnradionews.com/feeds/0217ukraine-mayall1.mp3