Can it be understood from these texts that the target countries we work in to establish the Khilafah "Caliphate" are the Arab countries only, and that the work in rest of the non-Arab countries is for the purpose of carrying the Dawah and not for the establishment of the Islamic State there? Especially after mentioning that the nucleus of the coming Islamic state, must be in the Arab countries first

The recent developments in Yemen were ambiguous to me, particularly the signing of the Peace and National Partnership Agreement on 21/09/2014, as though these developments have shuffled the papers... How were the Houthis able to reach Sanaa and lead its power and influence without effective resistance from the authorities? Does it imply that the influence of the British in Yemen has ended, and America that supports the Houthis has become…

Why does "Ar-Rikaz" (Buried treasure) come under the chapter of Kharaj and not the chapter of Zakat? Is the fifth of Rikaz taken when it reaches the "Nisab"?

Islamic Personality (Shakhsiya), Volume One page 46 (Arabic version): "Allah (swt) will enter those He wills from the Muslims into hellfire whose majors and sins outweigh their minors  and rewards". What is meant by their minors? Why was it mentioned next to the rewards if it means minor sins?