Elon Musk and Twitter: Can this end well?

Having bought Twitter, Elon Musk is moving rapidly to change the troubled social media platform, both for its hundreds of millions of users and for its endangered employees.

But will Musk make Twitter better or worse? Can he redeem what most observers are calling a terrible business deal? And if Twitter fails, what next for social networking?

Aideen Finnegan talks to Laura Slattery and Hugh Linehan.