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Cuba Cruises
Carnival's Adonia cruise ship arrives from Miami in Havana, Cuba, Monday, May 2, 2016. The Adonia's arrival is the first step toward a future in which thousands of ships a year could cross the Florida Straits, long closed to most U.S.-Cuba traffic due to tensions that once brought the world to the brink of nuclear war. (AP Photo/Ramon Espinosa)
Venezuela Labor Day
Venezuela's President Nicolas Maduro speaks during a May Day march in Caracas, Venezuela, Sunday, May 1, 2016. President Maduro ordered a 30 percent increase in the minimum wage, the latest move by the socialist government to grapple with high inflation and economic stagnation. (AP Photo/Ariana Cubillos)
DEMS Sanders 2016
Democratic presidential candidate, Sen. Bernie Sanders, I-Vt, speaks during a campaign event Sunday, May 1, 2016, in South Bend, Ind. (AP Photo/Charles Rex Arbogast)
Zurich Classic Golf
Brian Stuard holds up the tournament trophy after winning the rain-delayed Zurich Classic golf tournament at TPC Louisiana in Avondale, La., Monday, May 2, 2016. (AP Photo/Gerald Herbert)
Greece Migrants
Women and children stroll at a makeshift camp for migrants and refugees at the northern Greek border point of Idomeni, Greece, Monday, May 2, 2016. Many thousands of migrants remain at the Greek border with Macedonia, hoping that the border crossing will reopen, allowing them to move north into central Europe. (AP Photo/Gregorio Borgia)
Fracking Colorado
FILE - In this March 29, 2013, file photo, workers tend to a well head during a hydraulic fracturing operation outside Rifle, in western Colorado. The Colorado Supreme Court has struck down attempts by two cities to ban or delay fracking. The Monday, May 2, 2016, ruling is a victory for the oil and gas industry and for state officials who say only state government can regulate energy, not cities or counties. (AP Photo/Brennan Linsley, File)