A massive, rolling, national strike begins today, in protest against proposed reforms of the sprawling pension system. But details of the changes haven’t even been published yet. Our correspondent visits the conflict-ravaged Darfur region, and sees a historic opportunity for peace. And a look at how best to let entrepreneurial immigrants get back in business. For full access to print, digital and audio editions of The Economist, subscribe here www.economist.com/radiooffer For information regarding your data privacy, visit acast.com/privacy