Iran has begun a diplomatic push against European and Arab countries it says supported or harbored people linked to a terrorist attack that left 25 people dead and fueled Middle East tensions.
Al Ahvazieh, an ethnic Arab separatist group with links to Saudi Arabia, claimed responsibility for Saturday’s attack by four gunmen on a military parade in the southwestern Iranian city of Ahvaz. Iranian officials said children and journalists were among the dead, along with eight members of the elite Islamic Revolutionary Guard Corps...