Ukraine’s president has removed two top government officials citing many cases of treason in the two powerful organisations they led. What impact have the collaborators had and how serious is the problem?

Tortoise is a news start-up devoted to slow journalism. We take our time to tell stories that really matter. If you want more slow and considered journalism, you can become a member of Tortoise to get access to more of our stories, contribute to our journalism and join exclusive events.

Just go to tortoisemedia.com/friend and use the code Tomini50 to get a year's digital membership for £50.

Hosted on Acast. See acast.com/privacy for more information.