This is 6 minutes, the seriously international daily newscast. It's Tuesday, February 4 - let Jacob Shropshire and Emma Albright guide you through the news. Today:

- China announces retaliatory tariffs on U.S. goods

- Rwanda-backed rebels announce a unilateral ceasefire in the Democratic Republic of Congo

- And our daily quiz question comes to us on the way to the moon

That, and much more, in today's 6 Minutes.