Some 800 migrants from the Middle East arrive at the Greek port of Piraeus on Sunday. Smugglers are charging thousands of dollars to take migrants across the Mediterranean, and prices can vary widely. Children are often allowed to travel for free.
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Egyptian security forces take up positions during anti-government demonstrations in Cairo last November. Egyptian activists have been disappearing in growing numbers, and human rights groups say they believe the security forces are responsible.
Saudi Arabia's army fires artillery shells toward Houthi rebels along the Saudi border with Yemen on April 15. Outside Saudi Arabia, many are critical of the military campaign and question whether it will succeed, but it is popular inside the kingdom.