Question: In English speaking countries, provide the difference between the number of countries with republic and constitutional monarchy as its government form.
SQL: SELECT COUNT(T1.GovernmentForm = 'Republic') - COUNT(T1.GovernmentForm = 'ConstitutionalMonarchy') FROM Country AS T1 INNER JOIN CountryLanguage AS T2 ON T1.Code = T2.CountryCode WHERE T2.Language = 'English'