system
Context: (CNN) -- President Barack Obama has nominated his top counterterrorism adviser, John Brennan, to be the next director of the CIA. 

If there is an emerging Obama doctrine to deal with the threat from al Qaeda and its allies, it is clearly a rejection of the use of conventional military forces and a growing reliance instead on the use of drones and U.S. Special Operations Forces -- and Brennan has been central to Obama's policy. 

In an April 30 speech at the Woodrow Wilson Center in Washington, Brennan laid out the rationale for the drone policy in more detail than any administration official had done publicly hitherto. He asserted that the drone strikes are legal both under the Authorization for Use of Military Force passed by Congress after the September 11 attacks and because, "There is nothing in international law that bans the use of remotely piloted aircraft for this purpose or that prohibits us from using lethal force against our enemies outside of an active battlefield, at least when the country involved consents or is unable or unwilling to take action against the threat." 

This does not appear to be the view of Ben Emmerson, U.N. special rapporteur on counterterrorism and human rights, who announced plans at Harvard Law School in October to launch an investigation into U.S. drone attacks and the extent to which they cause civilian casualties. 

Politics: Compared to Hagel, reaction to Brennan nomination muted 

One of Brennan's most significant legacies in the four years he has been the president's principal adviser on terrorism is the U.S. drone campaign against al Qaeda and its allies in countries such as Pakistan and Yemen -- one that has shifted focus significantly in the past year or so. 
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Who did Obama nominate?
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John Brennan.
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To be what?
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Next director of the CIA.
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Was he Obama's adviser before that?
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Yes.
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What kind?
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His top counterterrorism adviser,
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On what day did Brennan give his speech?
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April 30
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At what facility?
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The Woodrow Wilson Center.
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In what location?
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Washington.
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What did Brennan talk about in great detail?
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The drone policy.
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Did he say it was legal or illegal?
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Legal.
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What was passed by Congress?
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Authorization for Use of Military Force.
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After what event was it passed?
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The September 11 attacks.
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Does Ben Emmerson have the same opinion as Brennan?
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No.
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What is Emmerson's job title?
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U.N. special rapporteur on counterterrorism and human rights.
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Where did he announce his plans?
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Harvard Law School.
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In what month?
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October.
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Was he launching an investigation?
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Yes.
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Into what?
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U.S. drone attacks.
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And?
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And the extent to which they cause civilian casualties.