Officials in Britain have announced plans to build a massive wall bordering a refugee camp in Calais, in an effort to prevent refugees—fleeing violence in Syria and unrest throughout the region—from entering the U.K. Their goal is to stop residents of Calsis’ large refugee camp in northern France from entering into the U.K. through a tunnel that connects to Britain, and from attempting to cross the channel.

The structure, which has been dubbed "The Great Wall of Calais” by the British media, will stand 13 ft high—that’s larger than the Berlin Wall—and will cost more than $2.5 million. The plan has been controversial. Critics say that building a wall is too expensive and ineffective, but officials in the U.K. say it will prevent human smugglers from attempting the dangerous crossings.

The unofficial camp in Calais has been called “The Jungle” and is known for its poor conditions. Discuss

The news service of the Islamic State last night announced that Abu Muhammad al-Adnani was killed in northern Syria. al-Adnani was the senior ISIS strategist and “propagandist,” and one of the world’s most-wanted terrorists.

A Pentagon spokesman confirmed an American “precision strike” targeted toward al-Adnani, but officials couldn’t confirm his death.

A report from The New York Times cites an anonymous source claiming a United States military drone did hit a vehicle believed to be transporting al-Adnani. If we can believe the ISIS news service—analysts told the Times there’s no reason not to—it was an effective strike.

The official ISIS statement says al-Adnani was killed while checking up on the group’s military operations in Aleppo Province.

Adnani, a Syrian, was a founding member of ISIS, and functioned as the group’s spokesman and “propagandist.” The videos of ISIS beheadings and massacres that repeatedly shock the world are his work.

His death would represent a major shake-up within the senior ranks of ISIS. According to reports, the U.S. State Department had a $5 million bounty on him. This could be another setback for the terrorist group. However, experts from this report suggest ISIS is built for “maximum flexibility in the face of attacks.”

Speaking to the Times, Seth G. Jones, a terrorism specialist at the RAND Corporation, said:

In isolation, Adnani’s death represents the demise of an important strategic and operational leader of the Islamic State — though only one person. Adnani is likely replaceable, and the Islamic State will replace him as they have with other operatives that have been killed.

Donald Trump will visit Mexico Wednesday and meet with President Enrique Pena Nieto in Mexico City. President Pena Nieto's office said that invitations were sent to both Trump and Hillary Clinton—Clinton's campaign has yet to confirm its invitation.

You have to think whole wall thing will dominate their discussion.

After Trump's meeting with the Mexican president, he will return to the United States to deliver what his campaign is calling a major immigration speech in Arizona.

The speech comes as people have called for more clarity on Trump's immigration stance, saying he's wavering. He has recently suggested that he may soften some of his proposals, but he remains steadfast that Mexico will pay for the proposed wall.

This trip comes after more than a year of tension caused by Trump's comments about Mexicans, beginning with the infamous speech he made to announce his candidacy, saying that Mexico was "bringing their worst people" including rapists and crime- and drug-ridden people.

Trump has also consistently promised to build a wall between the United States and Mexico that Mexico will pay for, deport millions of undocumented immigrants and undo the North American Free Trade Agreement.

Mexico's President has previously denounced Trump, comparing him to Hitler and Mussolini because of his populist statements.

There have been episodes in human history, unfortunately, where these expressions of this strident rhetoric have only led to very ominous situations in the history of humanity. That's how Mussolini got in, that's how Hitler got in, they took advantage of a situation, a problem perhaps, which humanity was going through at the time, after an economic crisis. And I think what (they) put forward ended up at what we know today from history, in global conflagration. We don't want that happening anywhere in the world.

Pena Nieto and the rest of the current government have refrained from speaking out against Trump considerably, other than to say that Mexico will not pay for a border wall.

This will be Trump's first meeting with a head of state as the Republican nominee, according to The New York Times. Discuss

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Two of the most influential people in the world met today at the Vatican. According to a Vatican spokesperson, Pope Francis met with Facebook founder Mark Zuckerberg and his wife Priscilla Chan to discuss "how to use communications technology to alleviate poverty, encourage a culture of encounter, and to communicate a message of hope, especially to the most disadvantaged.”

Zuckerberg also presented the pope with his own drone, like the one the company is using to bring the internet to remote communities around the world. In a Facebook post, Zuckerberg explained,

Priscilla and I had the honor of meeting Pope Francis at the Vatican. We told him how much we admire his message of mercy and tenderness, and how he's found new ways to communicate with people of every faith around the world.

We also discussed the importance of connecting people, especially in parts of the world without internet access. We gave him a model of Aquila, our solar-powered aircraft that will beam internet connectivity to places that don't have it. And we shared our work with the Chan Zuckerberg Initiative to help people around the world.

It was a meeting we'll never forget. You can feel his warmth and kindness, and how deeply he cares about helping people.