Orthodox Christians around the world are celebrating Easter.Thousands of faithful have packed into Christianity’s holiest shrine, the Church of the Holy Sepulchre in Jerusalem. This is where Jesus is said to have been crucified and buried before his ressurection. Orthodox Easter falls a week after it is celebrated by other Christians. The head of the Russian Orthodox church led a service in Moscow, attended by the Russian President and Prime Minister. This was the first Easter mass celebrated by Patriarch Kirill, who was elected to lead the church in February.