Police investigators work at the site of the attack in Cetinje, Montenegro, on Friday. Risto Bozovic/AP hide caption
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An aerial view shows part of a highway near Podgorica, the capital of Montenegros. The highway project, constructed by a large Chinese state-owned company, risks derailing Montenegro's economy. Savo Prelevic/AFP/Getty Images hide caption
Montenegro's President Milo Djukanovic arrives for a summit of heads of state and government at NATO headquarters in Brussels earlier this month. Francois Mori/AP hide caption
Police block off the area around the U.S. Embassy in Montenegro's capital, Podgorica. An unknown assailant hurled a hand grenade toward the embassy at around midnight local time on Thursday and then killed himself with another explosive device. Risto Bozovic/AP hide caption
The old town area of Budva, a seaside town in Montenegro. Tuul and Bruno Morandi/Getty Images hide caption
Standing beside his country's flag, Foreign Minister Igor Luksic of Montenegro attends a news conference after Wednesday's meeting at NATO headquarters in Brussels. Eric Vidal/Reuters /Landov hide caption