"Our agreement with Current has been terminated and we will no longer be carrying the service. We are removing the service as quickly as possible," the company said in a statement.

Previous to Al-Jazeera's purchase, Current TV was in 60 million homes. It is carried by Comcast Corp., which owned less than a 10 percent stake in Current TV, as well as DirecTV. Neither company announced plans to drop the channel.

In 2010, Al-Jazeera English's managing director, Tony Burman, blamed a "very aggressive hostility" from the Bush administration for reluctance among cable and satellite companies to show the network.

Even so, Al-Jazeera has garnered respect for its ability to build a serious news product in a short time. In a statement announcing the deal, it touted numerous U.S. journalism awards it received in 2012, including the Robert F. Kennedy Journalism Award Grand Prize and the Scripps Howard Award for Television/Cable In-Depth Reporting.

But there may be a culture clash at the network. Dave Marash, a former "Nightline" reporter who worked for Al-Jazeera in Washington, said he left the network in 2008 in part because he sensed an anti-American bias there.

Current, meanwhile, began as a groundbreaking effort to promote user-generated content. But it has settled into a more conventional format of political talk television with a liberal bent. Gore worked on-air as an analyst during its recent election night coverage.

Its leading personalities are former New York Gov. Elliot Spitzer, former Michigan Gov. Jennifer Granholm and Cenk Uygur, a former political commentator on MSNBC who hosts the show called "The Young Turks." Current signed Keith Olbermann to be its top host in 2011 but his tenure lasted less than a year before it ended in bad blood on both sides.

Current has largely been outflanked by MSNBC in its effort be a liberal alternative to the leading cable news network, Fox News Channel.

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