The U.S. has instead resorted to targeting Haqqani militants and their allies in North Waziristan with dozens of drone attacks, sparking tension with Islamabad.
A drone strike killed one of Nasiruddin's brothers, Badruddin Haqqani, in North Waziristan in August 2012.
Pakistani officials regularly criticize drone strikes in public as a violation of the country's sovereignty, but the government has been known to support at least some of the attacks in the past, especially ones targeting enemies of the state rather than groups like the Haqqani network.
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