Iranian president Ebrahim Raisi, who died in a helicopter crash at the weekend, is to be buried in his home city of Mashhad on Thursday. Raisi is to be laid to rest at the city’s shrine of Imam Reza, the eighth imam of Shia Islam. High-ranking representatives of friendly states are expected to attend, including Russian parliamentary leader Vyacheslav Volodin. Iran’s state railway company organized special trains to take mourners from Tehran to the north-eastern city. Before arriving in Mashhad, there was a state-organized service on Thursday morning in the city of Birjand in which tens of thou…