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"This relationship is complicated. But it's also essential to both the United States and Pakistan. We are working very hard to keep open channels and to get back to work together," State Department spokesperson Victoria Nuland told reporters at a daily news briefing on Friday.
The US officials have been in constant contact with their counterparts in Pakistan, the latest being the meeting between the US ambassador to Pakistan, Cameron Munter with foreign minister Hina Rabbani Khar.
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Nuland said there is no reason to believe that the Dubai visit of President Asif Ali Zardari has anything to do other than his health issue. "We wish him a speedy recovery and a speedy return back to his country," she said.