Hundreds of thousands of Cubans cheered and sang with the Rolling Stones in Havana on Friday in the group's first ever concert in communist Cuba, where rock music was once banned.

The Ciudad Deportiva sports complex in the Cuban capital, with a capacity of 450,000, was crammed. The sea of people flowed beyond into the streets, with crowds even standing thick on neighboring rooftops for a total of about half a million fans.

Pop diva Mariah Carey on Friday canceled a show in Brussels, saying she was concerned for security after twin suicide bombings there left 31 people dead.

"I love my fans in Brussels and at this time I am being advised to cancel my show for the safety of my fans, my band, crew and everyone involved with the tour," the U.S. superstar said in a statement on Twitter.

Tens of thousands of Cubans flocked Friday to the first Rolling Stones concert ever played on the communist island, symbolically breaking with a repressive past in which even listening to rock 'n roll was illegal.

With no charge for entry, Cuban state media estimated that as many as 500,000 people could cram into Havana's Ciudad Deportiva sports complex -- and thousands more into surrounding streets.

A 1974 love song to the Belgian capital entitled "Bruxelles" has swept social media, becoming an anthem of resistance and support in the wake of this week's bombings, which killed 31 people.

Hollywood's traditional media players are facing an unprecedented challenge to their business model as "cord-cutters" opt to cancel their expensive cable subscriptions in favor of on-demand streaming services.

While pay-TV providers continue to charge well in excess of $50 (44 euros) a month for the top packages, Netflix, Hulu and Amazon are serving up an ever-growing menu of acclaimed original content for the price of a cheap bottle of wine. 

State dinners can be staid. But not on Wednesday, when U.S. President Barack Obama, on a visit to Argentina, was game for a go at tango -- with a pro, no less.

Looking relaxed practicing a few steps with dancer Mora Godoy, while his wife First Lady Michelle Obama gave it a whirl with dancer Jose Lugones, the Obamas held their own on tango's home turf.

Hundreds of aspiring ninjas from abroad have overwhelmed tourism officials in Japan looking to hire six full-time secret assassins, massively outnumbering local applicants.

Central Japan's Aichi prefecture is hiring a troupe of ninjas -- the martial-arts masters and stealth assassins of feudal times immortalized in history books and period dramas -- to promote tourism.

Iranian film star Golshifteh Farahani is to make her European stage debut in May playing the tragic heroine Anna in Paris.

The 32-year-old, who made her name internationally in Asghar Farhadi's modern classic "All About Ely", was the first top Iranian actor to star in a Hollywood film, raising eyebrows in her homeland when she appeared in Ridley Scott's "Body of Lies" in 2008.

The Rolling Stones took to Cuban media to promise a "historic" occasion when they give their first Havana concert this Friday in a communist country where rock 'n roll was long considered subversive.

"Hola Cuba!" the elderly but still hugely popular British superstars call out in a short clip posted on the state-run cubainformacion.tv website late Tuesday.

Say goodbye to Mink coats: Italian fashion king Giorgio Armani said Tuesday he would no longer use any real animal fur in his collections, saying there was no excuse to indulge in such "cruel practices."