In the Name of God بسم الله
It seems to me all this argument about who should or should not have been caliph is the sign of Islam's weakness. Hadrat Muhammad sallallahu `alayhi wa sallam said every religion has a unique virtue and the unique virtue of my religion is modesty. How is such argument adhering to the principles of modesty set by Hadrat Muhammad sallallahu `alayhi wa sallam? What we can say is that Hadrat Muhammad sallallahu `alayhi wa sallam and the early caliphs applied the virtue of modesty to every aspect of their lives and rule. They did not rule for pride, or for wealth, or for power and its trappings, or for dominance of others by themselves and their family members.They gave away their wealth for the betterment of society and lived humble lives with little material resources. .Before we question the early caliphs right to be caliph we need to ask ourself whether we are capable of such adherence to the principles of laid down by by Hadrat Muhammad sallallahu `alayhi wa sallam? For history has shown most latter Islamic rulers were not so conscientious, they were more concerned with amassing wealth and establishing dynasties rather applying modesty to their every actions. The fact that Muslims started arguing and fighting with each other over different issues rather than sorting things out, was foretold by Hadrat Muhammad sallallahu `alayhi wa sallam as the weakness that would come to plague the Muslim Ummar. It was not the fault of the early caliphs this occurred rather the ummar were becoming less diligent in adhering to the principles advocated by Hadrat Muhammad sallallahu `alayhi wa sallam, had these principles been adhered to such conflicts could not have occurred. Does it matter if Hasan ibn Ali considered 5th caliph by some and not others, for the status of any man be he of the highest or lowest should be judged alone by his action and deeds and not by titles and other trappings and only Allah can be the true judge of any mans and his status in his eyes. Calling or not calling Hasan ibn Al "Caliph" should not affect the respect or honor we hold in our hearts for him be we Sunni or Shea. As to finding a modern worthy caliph, we need to look for someone who demonstrates the same standards of piousness, diligence, bravery, stand fastness, justice, patience, kindness mercy, humility, good manners, thirst for knowledge, humbleness, chastity, modesty, promotion of harmony and love of humanity shown by Hadrat Muhammad sallallahu `alayhi wa sallam and the early caliphs. Probably more difficult than looking for a particular grain of sand hidden somewhere on one of the beaches on this planet.