Plus, in this week’s Installer: a new Mario Tennis, Sony’s great new buds, a wild time-travel movie, and much more.

Five European countries claim a highly lethal epibatidine poison was used in the Russian opposition leader’s death, raising possible chemical-weapons treaty violations.

Under the new scheme, every eligible road accident victim will be entitled to cashless treatment of up to Rs 1.5 lakh for a maximum of seven days from the date of accident.