U.S. President Donald Trump is applauded while delivering a speech on US-Cuba relations at the Manuel Artime Theater in Miami, Florida, U.S., June 16, 2017. REUTERS/Carlos Barria

Debris and fire is seen after an OV-10 Bronco aircraft released a bomb, during an airstrike, as government forces continue their assault against insurgents from the Maute group, who have taken over large parts of Marawi City, Philippines June 19, 2017. REUTERS/Romeo Ranoco

Members of Indian Navy perform yoga on the flight deck of INS Viraat, an Indian Navy's decommissioned aircraft carrier during International Yoga Day in Mumbai, India, June 21, 2017. REUTERS/Danish Siddiqui

A female Kurdish fighter from the People's Protection Units (YPG) fires a long range sniper rifle at Islamic State militants in Raqqa, Syria June 18, 2017. REUTERS/Goran Tomasevic

A man prays after a vehicle collided with pedestrians near a mosque in the Finsbury Park neighborhood of North London, Britain June 19, 2017. REUTERS/Neil Hall

People gather for Iftar (breaking fast), organised by Adaleh Foundation, amidst damaged buildings during the holy month of Ramadan in the rebel held besieged Douma neighbourhood of Damascus, Syria, June 18, 2017. Picture taken June 18, 2017. REUTERS/Bassam Khabieh

Children in gowns and mortarboards run with smiles during their kindergarten graduation ceremony in a kindergarten in Handan, Hebei province, China June 20, 2017.

Trapeze artist Erendira Wallenda performs as she hangs from a helicopter flying over the American side of Niagara Falls, in Niagara Falls, Ontario, Canada June 15, 2017. REUTERS/Mark Blinch

Mourners stand out side the art center before a funeral service for Otto Warmbier, who died after his release from North Korea, at Wyoming High School in Wyoming, Ohio, U.S. June 22, 2017. REUTERS/John Sommers II

Actor and comedian Bill Cosby (C) waves as he departs after a judge declared a mistrial in his sexual assault trial at the Montgomery County Courthouse in Norristown, Pennsylvania, U.S., June 17, 2017. REUTERS/Charles Mostoller

Extensive damage is seen to the Grenfell Tower block which was destroyed in a disastrous fire, in north Kensington, West London, Britain June 16, 2017. REUTERS/Hannah McKay

Pope Francis elevates the host as he leads the Corpus Domini procession at the Basilica of Santa Maria Maggiore in Rome, Italy June 18, 2017. REUTERS/Tony Gentile

A migrant rests on the Vos Hestia ship after being rescued by the "Save the Children" NGO crew in the Mediterranean sea off the Libya coast, June 19, 2017. REUTERS/Stefano Rellandini

A child plays in a fountain of water to cool off from the heat at the Miroir d'Eau (Mirror of Water), in Nantes as unusually high temperatures hit France, June 20, 2017. REUTERS/Stephane Mahe

Kurdish fighters from the People's Protection Units (YPG) extinguish a fire in a wheat field burned during clashes with Islamic State militants in Raqqa, Syria, June 15, 2017. REUTERS/Goran Tomasevic

Local residents react as they are evacuated, during a forest fire, from the village of Derreada Cimeira, Portugal June 18, 2017. REUTERS/Rafael Marchante

A member of the riot security forces (R) points what appears to be a pistol towards a crowd of demonstrators during a rally against Venezuela’s President Nicolas Maduro’s government in Caracas, Venezuela, June 19, 2017. REUTERS/Christian Veron