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A picture shows destroyed buses after a bomb explosion at Bourgas airport on July 18, 2012. Three people were killed and more than 20 wounded on Wednesday in an apparent bomb attack on a bus packed with Israeli passengers at a Bulgarian airport, officials said, with media saying the toll would rise.              AFP PHOTO / BULFOTOSTR/AFP/GettyImages
A picture shows destroyed buses after a bomb explosion at Bourgas airport on July 18, 2012. Three people were killed and more than 20 wounded on Wednesday in an apparent bomb attack on a bus packed with Israeli passengers at a Bulgarian airport, officials said, with media saying the toll would rise.              AFP PHOTO / BULFOTOSTR/AFP/GettyImages

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Barak: Israelis killed in terror attack

Deadly explosion on a bus carrying Israeli tourists in Bulgaria is "a terrorist attack," said Israel's Defense Minister.

Barak: Israelis killed in terror attack

Deadly explosion on a bus carrying Israeli tourists in Bulgaria is "a terrorist attack," said Israel's Defense Minister.