Iranians protested the jihadi group after twin suicide-bomb attacks earlier this month.
The Iranian military launched its first ballistic missiles into the country on Sunday.
Former U.S. Ambassador to Syria Robert Ford said President Barack Obama left his successor with little option but to ultimately withdraw.
Tehran claims the Saudi Arabian border guards opened fire on Iranian fishermen.
Iranian health nuts are livid with the authorities after the popular exercise dance class was outlawed.
The U.S. chopper reportedly triggered its automatic defense system, setting off flares.
The camp is one of two Australian facilities for processing asylum seekers criticised by human rights bodies.
"You and your agents are the source of instability in the Middle East," Ayatollah Khamenei tells the United States.
Deputy Chief of Staff of Iranian Armed Forces Major General Mostafa Izadi said Tehran has evidence of the U.S.'s "direct support" for the Islamic State militant group.
Russian Foreign Minister Sergei Lavrov told Secretary of State Rex Tillerson that the U.S. must stop attacking pro-Syrian government forces fighting ISIS.
The suicide bombings and gun attacks, claimed by the Islamic State militant group, killed 17.
A string of recent attacks have targeted Shiite Muslims in Iraq and Iran.
The attacks in the Iranian capital striking the country's parliament and a shrine killed 17 people.
Iran's Intelligence Ministry said Wednesday's massacre was perpetrated by Iranians loyal to the Islamic State militant group who fought in Iraq and Syria.
The Islamic State militant group claimed responsibility for twin attacks in the Iranian capital that killed 13 people.
The statement follows the first major ISIS attack on Iranian soil.
After being attacked, a coalition of forces backing the Syrian government and fighting the Islamic State militant group has warned the U.S. not to cross "red lines."
The group said two of its fighters carried out the attacks, which killed seven people.
The attacks in the Iranian capital left at least seven dead, according to local reports.
The State Department's Stuart Jones appeared took a 20-second-long silent pause when a reporter asked him about U.S.' backing of democracy and Saudi Arabia
Muslim-majority countries have different ways of determining the start of Islam's holiest month.
Speaking in Jerusalem the U.S. president also said Iran needed to cease funding of terror organizations.