Nyhetsbyrån Reuters har en bra Q&A om trenderna inom den internationella terrorismen. En rad namnkunniga experter deltar. För svensk del kan det vara värt att notera att de nordiska länderna pekas ut som tillhörande de mest hotade i Västvärlden.
WHAT ARE THE LIKELY TOP WESTERN TARGETS IN 2011?
Transport hubs and iconic landmarks remain favored targets. But the record of recent years shows that media companies linked to the publication of cartoons of the Prophet Mohammad, deemed offensive to Muslims, are at particularly high risk.
The most threatened Western countries include the United States, Britain, France, Germany and Nordic nations, experts say.
Security analysts also expect al Qaeda allies operating in the West to try to copy the 2008 fight-to-the-death-style raid by Islamist militants on the Indian financial center of Mumbai.
"The movement seems undeterred from the same grand homicidal ambitions it demonstrated on September 11, 2001," U.S. terrorism expert Bruce Hoffman wrote in an article for Site Intelligence.