A protester, right, waves a stick at Egyptian soldiers during clashes outside the Ministry of Defense in Cairo. (AP)

Gas-filled balloons explode during a campaign rally by Armenia's ruling party in the central Republic Square in Yerevan. (Reuters)

The Turanor Planetsolar ship arrives in the port of Monaco after completing the first around-the-world trip using solar energy. (Reuters)

Brazil's former President Luiz Inacio Lula da Silva, center, in academic dress, is congratulated after he received five honorary degrees from several universities at a ceremony in Rio de Janeiro. (AP)

A radar station at the missile defense facility in Sofrino, 50 km (31 miles) northeast of Moscow, Russia (AP)

A Chinese woman protesting about her own grievances is taken away by plain clothes security personnel and uniformed police officers outside the hospital where blind activist lawyer Chen Guangcheng is recuperating in Beijing. (AP)

Hot walker Cesar Zarko holds Kentucky Derby entrant Union Rags during his bath after a morning workout at Churchill Downs in Louisville, Kentucky. (AP)

Serbian police officers escort an arrested ethnic-Albanian, in Belgrade, Serbia. Police have arrested 8 people in the tense, ethnic-Albanian dominated south -  five of whom on suspicion of war crimes against Serbs during a 2001 conflict. (AP)

Slovakia's team players gather near their goal before their 2012 IIHF men's ice hockey World Championship Group H game against the Canada in Helsinki, Finland. (Reuters)

Citroen 2CV cars are parked at the Place de la Concorde in Paris, France, before a rally tour. (Reuters)

A Crimson rumped Toucanet in the private reserve of Paz de las Aves (Peace of the Birds) near Nanegalito, Ecuador (AFP)