Rumors have been swirling about Russian President Vladimir Putin’s taking usually unheard of sick days. Putin was supposed to go to Kazakhstan this week to meet in Astana with President Nursultan Nazarbayev and Belarusian President Alexander Lukashenko, but a Kazakh official told Reuters, “The visit has been cancelled. It looks like he has fallen ill.” Belarus officials wouldn’t comment, the report said. Russia’s Interfax news agency got Putin’s spokesman, Dmitry Peskov, to confirm the Kazakh cancellation. But “the president feels fine,” that report said. The Moscow Times said Peskov “did not pick up repeated phone calls.” A Russian news outlet...