Imam

If a non-muslim with a sound mind read about our Prophet, his staus in the sight of the God and then the society he lived in, his politics and reads Quran on the top with good sight then i dont think he would believe that the Prophet could leave his people in as chaotic state as propogated. Idea that Prophet left without a leader or successor is irrational, lacks common sense, and against the principles by which our Prophet ruled and the principles presented in the holy Quran.

Read Quran and understand its take on the leadership. There is no Shia Imamat or Sunni Imamat. Quran talks about only one leadership and thats Imamat of the MANKIND.

And what makes you say that the earth always has an Imam? Does the Quran or hadtih say that anywhere? please clarify this for me.

And Sadique habibi, read my answer about the Nahjul Balagha sermon again as i had edited it before you quoted me on it. Also remember that Hazrat Ali did not even call the Kharijis kaafir let alone the Syrians who were victims of Ummaya propoganda and were at large innocent of Muawiya and his trickeries.