Are we facing a new cyber cold war, or is there more behind allegations of Russian hacking in the US?

The troubling allegation that Russia interfered in the 2016 US presidential election raises important questions. Are we facing some kind of new cyber cold war? Or is there more to the story?

Leigh Alexander meets Annie Machon, a former British intelligence officer and a whistleblower, who argues that we should not to believe everything we hear. Can we trust our intelligence agencies? Where is the information on Russian hacking coming from? And who benefits if the allegations are true?