Philippine President Rodrigo Duterte speaks during a presidential awarding ceremony held at the Malacanang Palace in Manila, Philippines, on Monday. George Calvelo/Anadolu Agency/Getty Images hide caption

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A beach near the Papahanaumokuakea Marine National Monument, which was expanded earlier this month, and is considered a sacred place by Native Hawaiians. Saul Loeb /AFP/Getty Images hide caption

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Grand Chief Stewart Phillip shakes the hands of First Nation leaders after they sign the Treaty Alliance Against Tar Sands Expansion during an announcement on oil sands pipelines Thursday at the Musqueam Community Centre in Vancouver, British Columbia. Ben Nelms/Reuters hide caption

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An Iran Air Boeing 747 passenger plane sits on the tarmac of the domestic Mehrabad airport in the Iranian capital Tehran in 2013. Behrouz Mehri /AFP/Getty Images hide caption

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Imagine a world where you can buy fresh, delicious tacos on every street corner. T. Tseng/Flickr hide caption

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T. Tseng/Flickr

Picture An America With #TacoTrucksOnEveryCorner

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Retired Army Lt. Gen. Michael Flynn spoke at the Republican National Convention in Cleveland last month in support of Donald Trump. Chip Somodevilla/Getty Images hide caption

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Chip Somodevilla/Getty Images

Trump Adviser Says One Of The GOP Nominee's Signature Plans Is 'Not Workable'

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Shahram Amiri, an Iranian nuclear scientist, attends a news briefing while holding his son Amir Hossein as he arrives at the Imam Khomeini airport just outside Tehran, Iran, after returning from the United States in 2010. Vahid Salemi/AP hide caption

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Vahid Salemi/AP

Smoke rises over Saif Al Dawla district in Aleppo, Syria, in 2012. Russia and the Syrian government say they will open humanitarian corridors in Aleppo and offer a way out for opposition fighters wanting to lay down their arms, Russian Defense Minister Sergei Shoigu said Thursday. Manu Brabo/AP hide caption

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Manu Brabo/AP