LONDON — Lines at neighboring borders and protests are just some of the scenes in Russia following President Vladimir Putin’s call for partial military mobilization. Last week, Putin ordered up to 300,000 Russians to serve in the invasion of Ukraine that began in February. Since then, thousands of citizens have fled the country to bordering nations, including Georgia and Mongolia. A satellite image shows a long line of hundreds of vehicles on a road. Vehicles line up to cross the Upper Lars c...