Pope Francis signs a declaration in the Synod Hall during a conference on Modern Slavery and Climate Change at the Vatican, Tuesday, July 21, 2015. (AP Photo/Gregorio Borgia)
Mayor Hales joined mayors from around the world to attend Pope Francis' international summit on Modern Slavery & Climate Change
READ MOREMyint Naing was willing to risk everything to see his mother again
READ MOREThe 17-year-old from Gambia nearly lost his life when the dinghy he was on deflated
READ MOREChinese and Venezuelan leaders attended Russia's Victory Day parade but no Europeans
READ MOREWith a disaster so huge supplies and medical aid are slow to reach thousands in far-flung villages
READ MOREA year after the Chibok kidnapping Northern Nigeria is no safer
READ MOREPeople commute past a billboard that reads in Spanish; "Blockade, the longest genocide in history," in reference to the U.S. trade embargo imposed on Cuba, in Havana, Cuba, Friday, April 10, 2015. (AP Photo/Desmond Boylan)
The presidents of the United States and Cuba have spoken by phone for only the second time in more than 50 years
READ MOREPrime Minister Benjamin Netanyahu will speak to Congress to address a U.S. nuclear deal with Iran
READ MORECut off from the Internet, young Cubans have quietly linked thousands of computers into a hidden network that stretches miles across Havana
READ MOREU.S. Secretary of State John Kerry arrived in Pakistan on Monday to press the country's leadership to step up the fight against extremists
READ MORE