The children of imprisoned Iranian human rights activist Narges Mohammadi accepted the Nobel Peace Prize on her behalf in a ceremony on Sunday at Oslo City Hall. Her children Kiana and Ali Rahmani accepted the award on behalf of Mohammadi, 51, who remains in an Iranian prison. The 17-year-old twins read their mother’s speech, which she wrote in Iran’s notorious Evin prison. An empty chair was kept on stage during the ceremony for Mohammadi. “I write this message from behind the high, cold walls of a prison,” she wrote in her speech, and expressed hope that the honour would help strengthen the …