Prime Minister Stephen Harper, right, tours a Coptic Christian Church with Fathers Pishoy Wasfy, left, and Angelos Saad in Mississauga, Ont. Thursday. Harper participated in a roundtable discussion today on security with Coptic Christian leaders. A deadly suicide bombing in Egypt on New Year’s Day claimed the lives of some 21 worshippers. Harper condemned the attacks, saying the international community must stay vigilant against such violence against Coptic Christians. He says he wants Coptic Christians in Canada to know the country stands behind their right to safely practise their faith. Canada is believed to be home to the largest Coptic diaspora after the United States. Conservative estimates suggest there are nearly 250,000 Copts, mostly in Eastern Canada.