So far Germany’s new chancellor has been all but invisible at home and on the international stage. We examine the motives behind his reticence—and his abilities during a European crisis. As space becomes a battleground and satellites become targets, new research aims to bring nuclear power to bear. And visiting a red-hot art exhibition in three ways at once. For full access to print, digital and audio editions of The Economist, subscribe here www.economist.com/intelligenceoffer