Where are they? The Shia and Sunni leaders

The debate about the events some 1400 years ago that resulted in the martyrdom of Imam Hussain is still on in Muslim leadership circles all over the world. Each describes the other as deviant, unworthy of Islam and a violator of Islam's fundamental principles. Each justifies violence against the other to please God, they both believe in and each denounces the other as the worst enemy of Islam. Extremists on both sides are not tired of accusing each others' most revered personalities of crimes against them.
Yet, the religious leaders of both communities constantly engage in rhetoric reminding its followers that the Islam they preach is the most tolerant and the most peaceful religion.
Majority of Muslims that are not involved in this conflict among leaders is bewildered and often tends to believe that all these acts of violence are engineered by some hidden powers, including the not so hidden US, Israel, India, and Great Britain and many others. A few are willing to admit that there is a serious theological, political and social problem in relations between Shias and Sunnis.and those committing acts of violence are Muslims belong to either of the two communities.
The debate about Caliphate as championed by many Sunnis and Imamate as promoted by the Shias is irrelevant in our times. Even in places like Saudi Arabia, a 100 percent Muslim majority country with Sharia laws does not claim itself to be a Caliphate and the Shia Iran still waits for the arrival of its hidden Imam to return. Yet, in the name of their sects, both have been killing each other for long.
Non-Muslims have a right to ask this: "If Muslims cannot tolerate their internal differences and do not know how to handle them peacefully, how can we be assured that they would not act violently against others with whom they might have fundamental theological and religious differences?"
No one can resolve the differences that have existed among Shias and Sunnis forever. Even those who are considered the most pious among Muslims, i.e., the companions of the Prophet or their followers were engaged in these differences. So what can be expected from those who are living the legacy of their predecessors?
So what can be done?
Differences cannot be resolved, but the violence can be controlled. Rather than resorting to violence, the leadership of the two communities can engage in a serious, peaceful dialogue built on the fundamental divine principle that human life is sacred and it cannot be harmed. This is possible when those who are considered great spiritual leaders of the two communities instruct their followers that violence is not permitted in Islam and human beings cannot be killed for their theological differences.
The leadership has to repeat this message from every pulpit and vow to protect human life. It is possible to achieve peace between the two communities, but it requires a new style of leadership. This new style demands that leaders stop playing God and act as servants of God, whose obligation is to ensure the sanctity of human life of not only Muslims but of all others.
Without that, it is almost impossible to control the forces of violence unleashed by the hatred that has been nurtured for centuries in the name of Islam.
At people's level, we can stop promoting those leaders who talk the divisive language and incite them against the others. It is a difficult task, nevertheless, it is doable. At least in the US, those who are Shias and Sunnis can prevail upon their religious leaders to refrain from using a language of hatred and violence against each other.