article_snippet: Iraqi security forces launch rockets against Islamic State extremist positions in Tikrit, Iraq on March 31 .
article_snippet: Iraqi security forces launch a rocket during the operation to retake the city of Tikrit on March 31 .
article_snippet: Takeover: Shiite paramilitary fighters launch a rocket towards Islamic State militants in Tikrit on March 31 .
article_snippet: Iraqi paramilitary Shiite fighters load a rocket during a military operation to retake the city of Tikrit from Islamic State jihadists on March 30 .