Russia’s internet regulator is poised to significantly raise the fines it has slapped on US technology companies such as Facebook Inc and Alphabet Inc as the Kremlin escalates its push to curb access to information online. Companies that refuse to delete content judged to be illegal in Russia could soon face amends of 5 per cent to 20 per cent of their annual local revenue, Roskomnadzor, the federal communications watchdog, said in an email Monday.“For a number of companies that have…