It has been nearly two years since the conservative provocateur Andrew Breitbart died, but the online news organization that carries his name is not only continuing to wage his political battles, it is taking the war global.

Breitbart News Network, a group of activist, conservative news sites — including Big Government, Big Hollywood and Big Journalism — said on Sunday evening that it was adding at least a dozen staff members as it opens operations based in Texas and London. Stephen K. Bannon, the executive chairman of Breitbart News, said that those offices were the beginning of an expansion that would add a new regional site roughly every 90 days. California, Florida, Cairo and Jerusalem have already been chosen as expansion sites, he said.

Mr. Bannon said he was taking his cue from The Huffington Post, the liberal news and commentary site that has been growing rapidly overseas. He said there was an audience hungry for his brand of activist journalism. “There is a growing global anti-establishment revolt against the permanent political class at home, and the global elites that influence them, which impacts everyone from Lubbock, Tex., to London, England,” he said.

The expansion is being financed by a large pool of capital that Mr. Breitbart raised from private investors, Mr. Bannon said. Although it was always the company’s plan to add staff members and offices overseas, he said the timing had been accelerated because of a desire to influence two important political battles.