“[I can understand the 9/11 attacks] given the USA’s war in the Muslim lands of Afghanistan and Iraq.”“Radical Islamist defends alleged threats,” News in English, January 27, 2014, http://www.newsinenglish.no/2014/01/27/islamist-stands-by-his-threats/.
Fact:
On April 3, 2017, the day Vladimir Putin was due to visit the city, a suicide bombing was carried out in the St. Petersburg metro, killing 15 people and injuring 64. An al-Qaeda affiliate, Imam Shamil Battalion, claimed responsibility.