Leader of Islamic Republic of Iran and the Muslims worldwide, Ayatollah Sayed Ali Khamenei wrote a historic letter addressing the youth of North America & Europe, dated Jan. 21, 2015. <br /> <br />http://farsi.khamenei.ir/ndata/news/28731/index.html#en <br /> <br />Sheikh Usama Abdulghani shed light on the responsibilities of the believers in regards to this letter.