Iran's Supreme Leader Ayatollah Ali Khamenei lashed out against the United States and Saudi Arabia on Friday, saying this week's deadly terror attacks on Tehran by the Islamic State would lead to increased hatred of the two nations. The attacks took place on Wednesday morning at both the Imam Khomeini Mausoleum just South of Tehran, and at the Iranian Parliament, or Majlis.
According to an Iranian government statement, the male attackers had returned to the country last summer after fighting for Islamic State in Mosul, Iraq, and Raqqah, Syria, and had "intended to carry out terrorist operations in religious cities".
Thousands of people gathered on the streets of Tehran as Iran held funeral ceremonies for the victims of twin attacks that killed 17 people earlier this week.
In a separate message to Iranian Parliament Speaker Ali Larijani, the Kazakh parliament speaker condemned the attacks claimed by the Daesh (ISIS or ISIL) terrorist group and expressed his sympathy for the families of the victims. Sunni Saudi Arabia denied any involvement in the attacks.
The cutting remarks from Khamenei came one day after Iran's foreign minister, Mohammad Javad Zarif, denounced President Trump's response to the suicide bombing as "repugnant".
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He called regional rival Saudi Arabia "a tribal state very far from anything like a democracy", and denounced USA sanctions against Iran over its ballistic missile programme.
The Islamic State group has claimed responsibility for the attacks. "Some terrorist cells also have been dismantled", it added.
During the funeral, parliament Speaker Ali Larijani called the US the "international" version of the Islamic State and said Washington had exchanged democracy for money, a reference to a recent arms deal between the USA and Saudi Arabia.
"Daesh is an global danger", he said.
Parliamentary staff who survived the attack also attended the procession under tight security.