Iranian officials have welcomed the death of Abu Bakr al-Baghdadi, the founder and leader of Daesh (ISIL) terrorist group, but at the same time blamed the USA government for creating Daesh and other terrorist groups in the first place.
Mr Esper said the oil field mission will also ensure income for Syrian Kurds who are counted on by Washington to continue guarding IS prisoners and helping American forces combat remnants of the group - even as President Donald Trump continues to insist all USA troops will come home.
USA officials said Baghdadi's death would not end the conflict in Syria, but warned Washington could not be relied on to bring peace to the region. He also appeared to refer to more than one dog on the scene of the chase, saying Sunday morning that Baghdadi "reached the end of the tunnel, as our dogs chased him down".
In life as in death, Baghdadi's public relations war will continue.
During a visit to Chicago for a police chiefs convention Monday, Trump said the oil fields in Syria were worth $45 million a month in revenue, and the US plans to keep them. He indeed was and detonated the vest in the tunnel, killing himself and three children in the blast.
"Fighting terrorism, by any country, is a justified action, but according to the confessions of American authorities, Daesh terrorist group was formed by the USA itself", Mehr quoted Vaezi as saying.
And what to make of an operation perhaps precipitated by Donald Trump's abrupt decision to pull out of Syria?
A file image made from a video posted on a militant website on April 29, 2019, purports to show the leader of ISIS, Abu Bakr al-Baghdadi, being interviewed by his group's Al-Furqan media outlet.
"The dog is still in theater", said Gen. Mark Milley, the Chairman of the Joint Chiefs of Staff, in a Pentagon press briefing.
The official also confirmed SDF claims that its forces had killed the IS spokesman in a separate operation Sunday in the town of Jarablus, near the Syrian border with Turkey.
Trump announcing that ISIS leader Abu Bakr al-Baghdadi has been killed.
Can, the SDF advisor, said Turkey's incursion this month - made possible by Trump's controversial decision to withdraw some 1,000 U.S. troops - caused a delay in the operation against al-Baghdadi.
"Baghdadi and the thugs who follow him were responsible for some of the most brutal atrocities of our time", he said. "Keep the oil", Trump said.
"The president had planned a talk down to the unit and unit members", the general said.
Trump's tweet declassifying - which is declaring it to no longer be secret - the picture of the dog caused an online reaction.