I second u saleem...... when i read this book i realized how beautifully Umer(R.A) managed everything he opted thing from Persian and Roman Empire which he found good in the interest of state.

And one thing at that time monarchy was implemented as state system all over the world following . But in the beginning of Arab as a state after Holy Prophet and before Mavia(R.A) there was no monarchy. Monarchy starts when Mavia(R.A) transfer power to Yazeed. And then the incident of Karbala was happened.

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Think 100 times before you take a decision, But once that decision is taken, stand by it as one man.