In a statement on Monday, Nasser Kanaani expressed sympathy with the Russian nation and government, especially the families of the victims, over the terrorist attacks in Makhachkala and Derbend in Dagestan.
Kanaani said any type of terrorism is a threat to human society and international security.
The spokesman further urged world society to be serious in countering terrorism and take effective effort to fight the phenomenon.
On Sunday, several gunmen fired on some places of religious worship, killed at least 15 and wounded some others.
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