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Iraqi government forces clash with Islamic State (IS) group fighters in Fallujah on June 18, 2016 as they hunt down holdout jihadists after retaking the city which was IS's last remaining major hub in Iraq. While not fully under government control yet, Fallujah is the latest in a string of battlefield losses for IS, which has seen its two-year-old "caliphate" shrink significantly in recent months. / AFP PHOTO / STRINGERSTRINGER/AFP/Getty Images

A British Aerospace BAe-146 belonging to Neptune Aviation makes a Phos-Chek drop Saturday, June 18, 2016, on wildfires in Santa Barbara County, Calif. (Mike Eliason/Santa Barbara County Fire Department via AP)

Mohammed Tofeeq holds his 10-month-old daughter, Gulshan Tofeeq, while he prays at the grave of his wife Muqadas Tofeeq, who local police say was killed by her mother, in Butrawala village on the outskirts of Gujranwala, Pakistan, Saturday, June 18, 2016. Police have arrested the mother of Muqadas Tofeeq who is accused of killing her pregnant daughter for marrying against the wishes of her family. Violence against women is not uncommon in Pakistan where nearly 1,000 women are killed each year in so-called "honor killings" for violating conservative norms on love and marriage. (AP Photo/K.M. Chaudary)

TOPSHOT - A fire whirl, or fire tornado, rises from advancing flames in the early morning hours of June 18, 2016 at the Sherpa Fire near Santa Barbara,California. / AFP PHOTO / DAVID MCNEWDAVID MCNEW/AFP/Getty Images

DENVER, CO - June 18: Ellie Ozbayrak, 4, sports rainbow wings at the annual PrideFest celebration at Civic Center Park June 18, 2016. (Photo by Andy Cross/The Denver Post)