Isolation is paramount in the notorious Matrosskaya Tishina prison where Kremlin critic Alexei Navalny is being held. When guards escort high-profile inmates through the prison, they snap their fingers or use their keys like castanets to warn colleagues that they are coming. The goal is to keep human contact to a minimum — even if it’s just a quick encounter in the corridor. The prison has been home for Navalny since a judge this week ruled that he should be placed in pre-trial detention for at least 30 days.

Singh demands Afghan interpreters' families be allowed into Canada as Taliban surges
Singh says the resettlement program needs to be expanded.