President Rouhani said the US will regret its "aggressiveness".
Human Rights Groups have denounced Western arms sales to Saudi Arabia.
Longer than the Hutt River, the channel would see Qatar become an island.
Tehran has suggested it could take military action in the Gulf to block other countries' oil exports in retaliation for US sanctions.
Many of those dead are believe to have been studying for university entrance exams.
The fightingcame after claims by the Afghan government it had made significant gains against the insurgents.
The Gaza Health Ministry said there were no casualties reported.
The coalition said the strike was "legitimate", but there has been an international outcry.
Newshub takes a look inside Dubai to prove it's more than just a luxury stopover.
Another 45 people were wounded in the attack in the eastern city of Jalalabad.
The terrorist group's leader is plotting how to influence the next generation.
The Middle East is spiralling into a cycle of violence after another attack.
"The Middle East is already a tinder-box. This will make it much worse."
People were gathered after afternoon prayers when the explosion occurred.
A suicide bomber struck a voter registration centre in the Afghan capital, in an attack claimed by Islamic State.