AP Photo Trump on Brussels: Told you so Republicans spent the day bashing Obama's national security policy - and calling for a new crackdown on Muslim immigrants.

When the world awoke to news of terrorist attacks in Brussels, the only two remaining Republican presidential candidates with any chance of winning the nomination outright responded by stoking public fear and calling for action against Muslims.

Donald Trump didn’t wait to consult with the foreign-policy advisors he announced less than 24 hours earlier, instead dialing into the morning shows to condemn the attacks that, he said, serve as further rationale for some of his most controversial ideas, from closing America’s borders to allowing the greater use torture in the war on terrorists.


The Republican front-runner argued that he is the strongest candidate on border control, an issue he said he has emphasized more than any other GOP contender. Trump said immigrants aren’t assimilating to other countries’ cultures and that America has to be vigilant.

“We have no idea what’s happening. Our government has absolutely no idea what’s happening, but they’re coming into our country,” predicted Trump, offering no further evidence or specificity. “They’re coming in by the thousands and just watch what happens — I’m a pretty good prognosticator — just watch what happens over the years. It won’t be pretty.”

Not to be outdone, Ted Cruz, called for limiting the flow of refugees “from countries with a significant al Qaida or ISIS presence” and for heightened patrols of Muslim communities in the United States. "We need to empower law enforcement to patrol and secure Muslim neighborhoods before they become radicalized,” he said in a statement.

According to Belgian authorities, at least 31 people are dead and more than 170 are injured following a series of explosions — two at an airport and another at a metro station not far from the headquarters of the European Union. Islamic State claimed credit for the attacks, which followed the arrest of Salah Abdeslam on Friday. Abdeslam, apprehended during a raid in Brussels, is a suspect in the Paris terror attacks in November that left 130 people dead.

The third GOP presidential candidate, John Kasich, criticized both of his rivals for their heated rhetoric. “We are not at war with Islam. We are at war with radical Islam,” Kasich told reporters in Minnesota Tuesday. “The last thing we need is more polarization because, frankly, those who want to preserve Islam as a religion that is not at war with the west—we alienate them, how are we supposed to ever get the information we need, that law enforcement needs?”

Trump, who called in December for a temporary ban on Muslims after the Paris attacks and saw his poll numbers rise as a result, credited his position on border control for his lead in the race for the Republican nomination.

“This is what I’ve been saying for a long time, and I guess it’s at least a small part of the reason why I’m the No. 1 front-runner,” he told “Fox & Friends” in a phone interview. “I mean, people are very concerned about this, and they’re very concerned about the security of this country.”

Trump’s response to this international crisis offers the country—and his rivals—another glimpse into how he might handle the more sobering aspects of serving as commander in chief. As with his candidacy as a whole, his reaction provides a Rorschach test: while his blunt statements of strength remind supporters of what they like about Trump, they offer his rivals an opportunity to argue anew that the Manhattan billionaire is too unsophisticated and unprepared to grapple with the difficult decisions that will confront a president.

"Governor Kasich believes that leadership isn't about playing on people's fears and driving panic," said Chris Schrimpf, Kasich's spokesman. "It is about responding calmly, bringing people together and talking about the way forward. That's what Governor Kasich does in times of crisis."

Cruz, who has been frustrated by his inability to get to Trump’s right on immigration, attempted to portray his rival as unserious. “We don’t need a pep talk,” Cruz said Tuesday morning on Glenn Beck’s radio show. “What we need is serious leadership that keeps us safe.”

In a press conference earlier Tuesday morning, the Texas senator focused attention on Trump’s statements Monday that the United States should consider reducing its involvement in NATO because it costs too much.

"It is striking that the day after Donald Trump called for weakening NATO, withdrawing from NATO, we see Brussels, where NATO is headquartered, the subject of a radical Islamic terror attack," Cruz said. "Donald Trump is wrong that America should withdraw from the world and abandon our allies. Donald Trump is wrong that American should retreat from Europe, retreat from NATO, hand Putin a major victory and while he's at it hand ISIS a major victory.”

But Trump insisted that the U.S. has to be careful and warned that acts of terrorism will only multiply.

“I think this whole thing will get worse as time goes by,” he said. “It’s being, you know, perpetrated all over the place now. Brussels is in very bad shape, but many cities will be this way with what’s taking place, and it’s really the policies of people who don’t know what they’re doing.”

Later Tuesday morning, Trump tweeted: “President Obama looks and sounds so ridiculous making his speech in Cuba, especially in the shadows of Brussels. He is being treated badly!”

In a statement released by her campaign, Democratic front-runner Hillary Clinton offered her condolences and said the hate and fear campaign of the terrorists who struck Europe will not succeed. Later, she scolded others for using the attacks to promote torture and hate.

"We can be strong and smart without advocating torture or bigotry. We will not let fear dictate our foreign policy," she tweeted.

“The people of Brussels, of Europe, and of the world will not be intimidated by these vicious killers,” she said, adding that the attacks will strengthen America’s resolve to stand beside its allies to defeat terrorism.

And Bernie Sanders called for unity to destroy the Islamic State, which claimed responsibility for the Brussels attack later Tuesday.

“We offer our deepest condolences to the families who lost loved ones in this barbaric attack and to the people of Brussels who were the target of another cowardly attempt to terrorize innocent civilians,” Sanders said. “We stand with our European allies to offer any necessary assistance in these difficult times.”