(CNN) -- A terrorist explosion in Bulgaria. Tourist kidnappings in Egypt. Sometimes violent demonstrations in Greece. A coup in Mali. Deadly drug wars in Mexico. Olympic security failures in England. Who wants to be a tourist these days? The deadly bombing of a bus carrying Israeli tourists Wednesday in Bulgaria is the latest bit of bad news in a summer plagued by global instability. Traveling hardly sounds relaxing. The U.S. State Department's latest worldwide safety caution issued Wednesday warns that terrorist groups "continue to plan terrorist attacks against U.S. interests in multiple regions, including Europe, Asia, Africa and the Middle East."
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Despite economic uncertainty and terror threats, international travel is up globally
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U.S. travelers curbed travel abroad in 2011, but numbers are up for 2012
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Travel agents say most clients are not headed to trouble spots
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Today's traveler is aware of threats and unrest in the post 9/11 world, agents say
'Drug war violence in @placeholder' affects only a tiny portion of the country.