As in Paris a month ago, jihadist terrorism delivered a blow to freedom of expression this weekend in Copenhagen. The targets -- a free speech seminar at a cafe and Jews praying at a synagogue -- were not random. U.S. President Barack Obama should take note of that. This was not unforeseen, given the fact that the European continent is infected with the jihad disease. The main symptoms of this disease are attacks against values and Jews. Denmark was again the target of Islamic terrorism. This was not surprising, as Denmark was the country that, in 2005, was the source of the cartoons of the Prophet Muhammad which riled up millions of Muslims around the world, prompting them to hold violent demonstrations in the streets against the infidels. But there is another side to the coin, which prompts the question: How did Denmark become the country with the highest number, per capita, of citizens who have traveled to Syria to fight as jihadists? Denmark is widely considered to be one of the most comfortable countries in the world to live in. Denmark loves its immigrants and always tries hard to serve its citizens. But just as they say in the play "Hamlet," it appears that something is rotten in the state of Denmark. Radicalization among the country's Muslim population is increasing, which leads one to believe that perhaps the Scandinavian model has failed. If this is the case, then this will help the Danish People's Party, which wants to halt immigration and take Denmark out of the European Union. As foreshadowed in "Submission," the new book by French author Michel Houellebecq, it appears that also in Denmark the Right and the Muslims are preparing for at least a cultural war, if not an all-out war. Denmark is in shock. "We haven't known something like this since the Second World War," a Dutch journalist was quoted as saying. "This is like a nightmare. We knew the threat existed, but it was theoretical until something actually happened." So now the Danes -- like the French and the Belgians before them -- understand that we are no longer talking about a threat, but a reality. Danish Prime Minister Helle Thorning-Schmidt was right to quickly call the incident over the weekend a terrorist attack. Since Sept. 30, 2005, when the conservative Jyllands-Posten newspaper published a cartoon by Kurt Westergaard showing the Prophet Muhammad wearing a bomb in his turban, Islamists have viewed Denmark as an enemy. Now, instead of a bomb ticking on the head of Muhammad, there is a bomb ticking on the head of Europe. But this time it is not a cartoon, and it is certainly not funny.