you possibly know very little about the oath one takes ... why did it took so long for Sonia to take the oath till Rajiv become PM? Why did she took shelter in Italian Emabssy when Indira khan was killed? BTW- i was answering to your claim that there are other countries where Indian's become leaders so Sonia can be our PM- there is not a single country and that is my answer and YOU have no knowledge of world politics