The Panamanian authorities have pursued two theories: that it could be a case of score-settling by drug traffickers, or that it was an anti-Semitic attack.
Travelers should gives themselves at least three hours to pass through security at Juan Santamaría International Airport after terrorists attacks in Brussels sent airports around the work into a heightened state of security Tuesday.
Madrid will limit the number of people at Puerta del Sol square, Brussels scrapped celebrations following threats and Moscow police will for the first time close off Red Square. Other cities are going ahead with normal New Year's Eve festivities.
PARIS – French authorities have placed 24 activists under house arrest ahead of major U.N. climate warming talks starting near Paris next week, using the state of emergency powers declared after the Paris attacks.
The State Department often issues individual country travel alerts, but this notice was a rare "worldwide travel alert" that comes in the wake of a series of attacks.