Know what a Twelver is?

O'Bama opted out from opening a discussion about whether CAIR and the NY Mosque Muslims are a religious movement or a political movement.

I don't know much about the nuances of Islam.  I wanted to know about the 'Twelvers'.  My Wikipedia-derived explaination (a) taught me a little and (b) gave me a glimpse of how much division there is among Muslims.

TWELVERS:
"Twelver or Imami Shīa Islam is the largest branch of Shī‘ī (Shi'a) Islam. Adherents of Twelver Shī‘ism are commonly referred to as Twelvers, which is derived from their belief in twelve divinely ordained leaders, known as the Twelve Imāms and their belief that the Mahdi will be none other than the returned Twelfth Imam that disappeared and is believed by Twelvers to be in occultation. Approximately 85% of Shī‘a are Twelvers, and the term Shi'a Muslim as commonly used in English usually refers to Twelver Shī‘a Muslims only."

Twelvers share many tenets of Shī‘ism with related sects, such as the belief in Imāms, but the Ismā‘īlī and Zaydī Shī‘ī sects each believe in a different number of Imāms and for the most part, a different path of succession regarding the Imāmate. They also differ in the role and overall definition of an Imām. The Shia Muslims believe that following the Prophet Muhammad's death, leadership should have passed directly to his cousin/son-in-law, Ali.

The Twelver faith is predominantly found in Iran, Azerbaijan, Bahrain, Iraq, Lebanon, ((Afghanistan)) and Kuwait. It also forms a large minority in India, Pakistan and Saudi Arabia.

Throughout history, Shia Muslims have not recognized the authority of elected Muslim leaders, choosing instead to follow a line of Imams which they believe have been appointed by the Prophet Muhammad or God Himself.


WHAT ABOUT SUNNI'S?

"The division between Shia and Sunni dates back to the death of the Prophet Muhammad, and the question of who was to take over the leadership of the Muslim nation. Sunni Muslims agree with the position taken by many of the Prophet's companions, that the new leader should be elected from among those capable of the job. This is what was done, and the Prophet Muhammad's close friend and advisor, Abu Bakr, became the first Caliph of the Islamic nation. The word "Sunni" in Arabic comes from a word meaning "one who follows the traditions of the Prophet."

Sunni Muslims make up the majority (85%) of Muslims all over the world.

THE GREAT DIVIDE BETWEEN SUNNI AND SHIITE: Shiite Muslims share the belief that leadership should have stayed within the Prophet's own family, among those specifically appointed by him, or among Imams appointed by God Himself.


NOW I KNOW THAT...SO WHO IS COMMITTED TO KILLING ME; A KUFAR?  ALL OF THEM?