Syrian refugee woman cries by one of her children as she and family members arrive in an overcrowded dinghy on the Greek island of Lesbos after crossing a part of the Aegean Sea from the Turkish coast, on Saturday.
Refugees and other migrants wait to board buses at Tovarnik railway station in Croatia after crossing from Serbia on Friday. Officials say they were forced to close eight road border crossings Thursday after thousands of people entered the country when Hungary fenced off its border with Serbia earlier this week.
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A military amphibious vehicle heads down a flooded street in Obrenovac, Serbia. Residents were preparing for a river surge Monday that threatened to inundate Serbia's main power plant.