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The commander of US and NATO troops in Afghanistan, General Stanley McChrystal addresses the press on April 21, 2010 at the Defence Ministry in Berlin. McChrystal had postponed his visit twice, due to disruptions from the volcanic ash cloud. According to press reports, McChrystal wanted to see Berlin commit to making "an important contribution" to a planned US-led offensive against Taliban forces later this year in northern Afghanistan, where Germany's troops are based. AFP PHOTO BARBARA SAX (Photo credit should read BARBARA SAX/AFP/Getty Images)

The commander of US and NATO troops in Afghanistan, General Stanley McChrystal addresses the press on April 21, 2010 at the Defence Ministry in Berlin. McChrystal had postponed his visit twice, due to disruptions from the volcanic ash cloud. According to press reports, McChrystal wanted to see Berlin commit to making "an important contribution" to a planned US-led offensive against Taliban forces later this year in northern Afghanistan, where Germany's troops are based.     AFP PHOTO    BARBARA SAX (Photo credit should read BARBARA SAX/AFP/Getty Images)