Russia agrees to provide more oil and gas to China. And that’s a pretty big deal.

<p>From the BBC World Service: After all, China is the world&#8217;s biggest energy consumer. We examine the economic links between the two countries. Also, Beijing is being cautious about how much it supports Moscow, especially when it comes to the build-up of Russian troops at Russia&#8217;s border with Ukraine. And, scientists in South Africa say they&#8217;ve produced a version of Moderna&#8217;s COVID-19 vaccine.</p>