TOPSHOT - An Iranian policeman holds a weapon as he stands by a window at the Iranian parliament in the capital Tehran on June 7, 2017 during an attack on the complex. 
The Islamic State group claimed its first attacks in Iran as gunmen and suicide bombers killed at least five people in twin assaults on parliament and the tomb of the country's revolutionary founder in Tehran. / AFP PHOTO / FARS NEWS / OMID VAHABZADEH        (Photo credit should read OMID VAHABZADEH/AFP/Getty Images)