A cherry tree is in full blossom in front of the skyline on a sunny day in Frankfurt, central Germany, Wednesday, April 8, 2015 (Photo: AP)
Russia's Prime Minister Dmitry Medvedev visits Wat Phra Kaew (Temple of the Emerald Buddha) in Bangkok, April 8, 2015 (Photo: Reuters)
A musician takes a selfie with others members of his band during Pope Francis' Wednesday general audience in Saint Peter's Square at the Vatican April 8, 2015 (Photo: Reuters)
Spain's King Felipe VI, left, center, reviews an honor guard during his visit to the Spanish U.N. peacekeepers base in the southern village of Blatt, Lebanon, Wednesday, April 8, 2015 (Photo: AP)
A man walks next graffiti by Greek street artist Achilles, in Athens, Wednesday, April 8, 2015 (Photo: AP)
Britain's Prime Minister David Cameron talks to children during a visit to Sacred Heart RC primary school in Westhoughton near Bolton, England, Wednesday, April 8, 2015 (Photo: AP)
A flight crew member attaches a Japanese national flag on the airplane for Emperor Akihito and Empress Michiko's special flight to Palau before it's take off at Haneda international airport in Tokyo April 8, 2015 (Photo: Reuters)
An aerial view shows a replica of the Eiffel Tower (C) and residential buildings at the Tianducheng development in Hangzhou, Zhejiang province April 8, 2015 (Photo: Reuters)
Kenya Red Cross staff help a woman after she viewed the body of a relative killed in last Thursday's attack on Garissa University College in northeastern Kenya, at Chiromo funeral home, Nairobi, Kenya, Wednesday, April 8, 2015 (Photo: AP)
Pope Francis leaves at the end of his weekly general audience, in St. Peter's Square, at the Vatican, Wednesday, April 8, 2015 (Photo: AP)
Cleaners rope down the facade of the Art Science Museum against the backdrop of the central business district along Marina Bay in Singapore April 8, 2015 (Photo: Reuters)
tourist takes pictures amidst soap bubbles from a mist blowing machine at Universal Studios, a popular tourist destination, Wednesday, April 8, 2015, in Sentosa, Singapore (Photo: AP)