Russian President Vladimir Putin fell down the stairs and soiled himself this week amid mounting speculation that his health is declining, an anti-Kremlin Telegram channel with apparent links to his security team reported. Putin, 70, suffered the unfortunate fall at his Moscow official residence on Wednesday evening, according to the Telegram channel “General SVR,” which purports to be run by a former Russian spy. The ailing Russian leader allegedly fell down five steps before landing on his coccyx, or tailbone. Although his security guards immediately rushed to his aid, the impact of the fall caused Putin to “involuntarily defecate” due...