In Sunday's first-round of regional elections in France, the clear and stunning winner was the National Front of Marine Le Pen.
Her party rolled up 30 percent of the vote, and came in first in 6 of 13 regions. Marine herself won 40 percent of her northeast district.
Despite tremendous and positive publicity from his presidential role in the Charlie Hebdo and Paris massacres and the climate summit, Francois Hollande's Socialist Party ran third.
What drove the victory of the National Front?
According to The Wall Street Journal's William Horobin, "Ms. Le Pen, who has combined the party's anti-immigration stance with calls for hard-line security measures and tighter control of France's borders, has only bolstered her support in the three weeks since the Paris attacks."
The rightward shift in French politics is being replicated across Europe, as nations tighten borders and erect new checkpoints against the tsunami of migrants and refugees from Africa and the Middle East.
Angela Merkel and open borders are yesterday in Europe; Marine Le Pen is tomorrow.
And the rightward shift is occurring here as well, propelled by the terrorist atrocity in San Bernardino. On immigration, terrorism, borders, crime and security, Americans are moving to the right. Donald Trump has taken the toughest stance.
He will send illegal immigrants back and make Mexico pay for his wall.
He is the least restrained in what he would do to the Islamic State. And his lead nationally has now reached an unprecedented 20 points.
In Iowa, Sen. Ted Cruz is surging. Cruz would "carpet bomb [ISIS] into oblivion," and try to make the sand around Raqqa "glow in the dark."
He charges Marco Rubio with collaborating with Sen. Chuck Schumer in backing amnesty for illegal immigrants.
In return, Rubio tears into Cruz daily, charging him with being soft on national security for having backed the USA Freedom Act that denies the NSA instant access to all phone and computer records of American citizens.
Like most Republicans, Cruz supported keeping NSA's hands off the metadata of electronic communications of U.S. citizens. But that position seems more suited to the libertarian moment that has passed, not the national security moment we live in today.
Chris Christie says San Bernardino proves his point about keeping refugee wives and even 3-year-old orphans out of New Jersey. As we now know, that female terrorist may have been the radicalizer.
The Clintons have long been reliable weather vanes of national politics. And Hillary Clinton, too, has begun moving to the right. Sunday, she said she was ready to take "military action" if Iran fails to comply with the slightest provision of President Obama's nuclear agreement.
She wants tech companies to start policing and shutting down Islamist websites that preach hate and may have radicalized the couple that carried out San Bernardino. Clinton added dismissively, "You are going to hear all the familiar complaints: 'freedom of speech.'"
Monday's Washington Post reported on how Bernie Sanders, yesterday's Socialist sensation, received a tepid response when he spoke to a crowd about income equality, but failed to address the Islamist terrorist atrocity and what he would do about it.
Last week, The New York Times ran its first front-page editorial in 95 years, demanding new federal gun laws. America's response — a stampede to gun stores to buy firearms for self-defense.
Outlawing AK-47s and AR-15s may seem like common sense to the Times.
But Americans do not believe such laws would keep terrorists from getting these weapons. And many realize those cops used semi-automatic rifles to turn the terrorists' SUV into a pile of junk in a single minute — and them into Bonnie and Clyde.
Even the president is signaling a shift to the right.
Sunday, in only his third Oval Office address, Obama said he will intensify bombing in Iraq and Syria. He wants tougher screening of those coming to America. And he concedes that "an extremist ideology has spread among some Muslim communities" and is a "real problem Muslims must confront."
Tougher on crime, tougher on terrorists, tougher on securing the border — that is the demand of the moment, and probably of 2016.
Americans are coming to realize we cannot prevent all such slaughters as Ford Hood and Virginia Tech, Columbine and Aurora, Tucson and the Navy Yard, Newtown and Umpqua College, and Charleston.
Nor can we prevent all Islamist terrorism if Muslims raised here or living here become radicalized in mosques or by the Internet, and seek revenge and paradise as warriors of ISIS by slaughtering Americans.
Al-Qaida and ISIS now realize the worldwide publicity gains of Paris and San Bernardino in terrorizing the West. And they will surely seek to replicate those massacres.
And every new atrocity, whether of the work place or Islamist variety, will make cops more popular and guns seem more essential.
New horrors are likely ahead — that will continue America's turn to the right.
Patrick Buchanan has been an adviser to three presidents, a two-time candidate for the Republican presidential nomination, and the nominee for the Reform Party in 2000. He was also a founding member of "The McLaughlin Group," which began on NBC, and CNN's "Capital Gang" and "Crossfire." His latest book is: "The Greatest Comeback: How Richard Nixon Rose From Defeat to Create the New Majority." For more of his reports, Go Here Now.