A woman holds a painting of President Hugo Chavez as supporters gather around Bolivar square after his return to the country in Caracas. Chavez returned to Venezuela early Monday after more than two months of medical treatment in Cuba following cancer surgery. Fernando Llano/AP
Two boys hold on to the side of a tram at the Alfama neighborhood in Lisbon. Rafael Marchante/Reuters
Klara Zakopalova of the Czech Republic serves to Marion Bartoli of France during their women's singles match at the WTA Dubai Tennis Championships. Jumana El Heloueh/Reuters
Two horses for sale play with each other at Skaryszew horse fair in Poland. Polish animal rights campaigners heckled traders at one of Europe's biggest horse-trading fairs to prevent them selling the animals for meat. Peter Andrews/Reuters
Moulders play cards during a break at an iron foundry at the Tekhnolit Polotsk plant in Polotsk, about 137 miles northeast of Minsk, Belarus. Vasily Fedosenko/Reuters
A farmer loses control over his pair of oxen as they race through a paddy field during the "Kakkoor Kalavayal" festival at Kakkoor village, on the outskirts of the southern Indian city of Kochi. Sivaram V/Reuters
Riot police officers stand guard at a Vueling check-in desk as passengers walk past during a protest by Iberia workers at Barcelona's airport. Albert Gea/Reuters
People watch and walk by an arts installation promoting the exhibition "Nude Men" in front of Leopold museum in Vienna. The exhibition is designed to show the diverse and changing depictions of male nudity in art history. Heinz-Peter Bader/Reuters
A Malian schoolgirl listens to her teacher as schools reopen in Gao, northern Mali. Jerome Delay/AP
New York Yankees' fans hold up a giant cutout of Derek Jeter's head during a workout at baseball spring training in Tampa. Matt Slocum/AP
Britain's Prime Minister David Cameron plays cricket with Indian boys at the Oval Maidan, a communal cricket pitch in the centre of Mumbai, India. On his second visit to Britain's former colony, Cameron led a delegation of more than 100 British CEOs and investors and stopped first in Mumbai, India's financial capital. Stefan Rousseau/Reuters
U.N. Secretary-General Ban Ki-moon said that the attack, carried out against rebel-held territory, may amount to a war crime if found to be deliberate.
BySarah El Deeb, Associated Press
U.N. Secretary-General Ban Ki-moon called on Thursday for an immediate investigation of an attack on a school in Syria's Idlib province that the U.N.'s children's agency is calling one of the deadliest of its kind in the country's six-year war.