He rose to be one of the extremist group's leading ideologues.
Izadi said it was partly intended for a Saudi audience.
As it tries to craft a Syria strategy, the Trump administration is divided between those who consider Islamic State the primary enemy and some officials who think the war in Syria is part of an existential struggle between the United States and its Gulf allies on the one hand and Iran on the other, said a third us official, who has participated in government deliberations on Syria.
USA officials told VOA they were close to confirming that an Iranian-made drone shot down by an American fighter jet early Tuesday in Syria was being operated by the IRGC. Of the seven missiles fired at the ISIS-held Syrian town of Deir el-Zour, only two were reported to have reached their target.
The official says the drone was considered a threat, and was shot down by a U.S. F-15 fighter jet. He spoke on condition of anonymity in line with regulations. Coalition aircraft stopped the pro-regime forces from advancing on Ja'Din.
It said the latest contribution brings the total funding from the EU Trust Fund for UNICEF's work on the Syria crisis response to almost €200 million ($223 millions).
Fighting and bombardment, meanwhile, resumed early Tuesday between Syrian government forces and rebels in the southern city of Daraa and nearby areas, where a 48-hour truce had gone into effect Saturday. That appeared to put an end to the fighting and the Americans sought to defuse the situation by calling their Russian counterparts from Al Udeid Air Base in Qatar. He is blaming the government for the truce's collapse. The crisis quickly became a civil war, which has since left at least 400,000 people dead.
Korea President: Trump and I Have Common Goal
The protest came as President Moon Jae-in and his U.S. counterpart Donald Trump are set to meet in Washington D.C. next week. Moon's visit was aimed as a warning against North Korean provocations, the spokesman said .
If this claim was true, it would be the first example of Iran using mid-range ballistic missiles, needed to travel the 400-mile distance, since the end of the Iran-Iraq war.
Iran's Revolutionary Guard said it had fired six missiles from western Iran into northeastern Syria on Sunday, targeting "terror bases".
Sunday's strike came amid rising tensions between Riyadh and Tehran.
It was not known what exactly was hit and Iran has provided no details.
"If we decide to target a location with missiles, this decision falls within the field of national security", said Rouhani. State television footage showed the missiles on truck missile launchers in the daylight before being launched at night. "We want to de-escalate, not escalate", Davis said.
Even before that battle is over, however, tensions have risen over control of eastern Syria as Iranian-backed militias, including the Lebanese group Hezbollah, have moved to extend their reach toward areas where the US -based fighters are also operating.
"The Coalition forces were manning an established combat outpost to the northeast of At Tanf where they are training and advising partner ground forces in the fight against ISIS", U.S. military officials with Central Command, or CENTCOM, said in public remarks.