He publicly announced His mission and was enthusiastically accepted by the majority of the Babis, who were known thereafter as Baha'is.

A minority, however, under the leadership of Baha'u'llah's half brother, Mirza Yahya, become violently opposed to Him and joined with their former enemies, the _Sh_i'ihs, in plotting for His overthrow.

Great troubles ensued, and at last the Turkish Government banished both Babis and Baha'is from Adrianople, exiling Baha'u'llah and His followers to Akka, in Palestine, where they arrived (according to Nabil)( 15) on August 31, 1868, while Mirza Yahya and his party were sent to Cyprus.
Letters to Kings About this time Baha'u'llah wrote His famous letter to the Sultan of Turkey, many of the crowned heads of Europe, the Pope, and the _Sh_ah of Persia.

Later, in His Kitab-i-Aqdas( 16) He addressed other sovereigns, the rulers and Presidents of America, the leaders of religion in general and the generality of mankind.

To all, He announced His mission and called upon them to bend their energies to the establishment of true religion, just government and international peace.