PUL-E ALAM, AFGHANISTAN - MARCH 27: U.S. Army SPC Romik Hazarian escorts U.S. Army advisers with 2nd Battalion 87th Infantry Regiment, 3rd Brigade, 10th Mountain Division inside Forward Operating Base (FOB) Maiwand, an Afghan National Army (ANA) base that adjoins the U.S. Army's FOB Shank, on March 27, 2014 near Pul-e Alam, Afghanistan. Soldiers with the U.S. Army's 3rd Brigade Combat Team, 10th Mountain Division stationed at FOB Shank advise and assist Afghan National Security Forces in the region. Security is at a heightened state throughout Afghanistan as the nation prepares for the April 5th presidential election. (Photo by Scott Olson/Getty Images)
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Afghan troops pull out of Helmand districts
Afghan forces have pulled out of some Helmand districts where the Taliban is proving intractable. CNN's Ivan Watson reports.
02:33 - Source: CNN
The war in Afghanistan 16 videos
PUL-E ALAM, AFGHANISTAN - MARCH 27: U.S. Army SPC Romik Hazarian escorts U.S. Army advisers with 2nd Battalion 87th Infantry Regiment, 3rd Brigade, 10th Mountain Division inside Forward Operating Base (FOB) Maiwand, an Afghan National Army (ANA) base that adjoins the U.S. Army's FOB Shank, on March 27, 2014 near Pul-e Alam, Afghanistan. Soldiers with the U.S. Army's 3rd Brigade Combat Team, 10th Mountain Division stationed at FOB Shank advise and assist Afghan National Security Forces in the region. Security is at a heightened state throughout Afghanistan as the nation prepares for the April 5th presidential election. (Photo by Scott Olson/Getty Images)
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Afghan troops pull out of Helmand districts
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Alleged Taliban fighters and other militants stand handcuffed while being presented to the media at a police headquarters in Jalalabad on March 6, 2018. Afghan police said over 17 alleged Taliban militants including two Pakistani nationals were arrested during a five-week operation in Nangarhar province. / AFP PHOTO / NOORULLAH SHIRZADA (Photo credit should read NOORULLAH SHIRZADA/AFP/Getty Images)
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US President Donald Trump speaks during his address to the nation from Joint Base Myer-Henderson Hall in Arlington, Virginia, on August 21, 2017. Trump said a rapid Afghan exit would leave 'vacuum' for terrorists. / AFP PHOTO / Nicholas Kamm (Photo credit should read NICHOLAS KAMM/AFP/Getty Images)
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CAMP BLESSING, AFGHANISTAN - OCTOBER 22: Artilerymen await coordinates before firing a 155mm Howlitzer on a Taliban position October 22, 2008 from Camp Blessing in the Kunar Province of eastern Afghanistan. Their unit, Charlie Battery, 3rd Battalion of the 321 Field Artilery, has fired more than 5,900 shells since it deployed to Afghanistan less than a year ago, making it the busiest artilery unit in the U.S. Army, according to to military officers. They most often fire in support of Army infantry units battling Taliban insurgents in the nearby Korengal Valley, site of some of the heaviest fighting in Afghanistan. (Photo by John Moore/Getty Images)
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Trump: US in Afghanistan to kill terrorists
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US President Donald Trump speaks during his address to the nation from Joint Base Myer-Henderson Hall in Arlington, Virginia, on August 21, 2017. Trump warned Monday that a hasty exit from Afghanistan would create a "vacuum" that would benefit America's jihadist foes, in a major policy address on his strategy in the 16-year conflict. / AFP PHOTO / Nicholas Kamm (Photo credit should read NICHOLAS KAMM/AFP/Getty Images)
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President Donald Trump speaks at Fort Myer in Arlington Va., Monday, Aug. 21, 2017, during a Presidential Address to the Nation about a strategy he believes will best position the U.S. to eventually declare victory in Afghanistan. (AP Photo/Carolyn Kaster)
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US President Donald Trump walks by as reporters shout questions to him upon his arrival on the South Lawn at the White House on August 14, 2017 in Washington, DC. Later today President Trump will be meeting from Attorney General Jeff Sessions and FBI Director Christopher Wray regarding this weekendÕs events in Charlottesville, Virginia. (Mark Wilson/Getty Images)
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Will Trump send more troops to Afghanistan?
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WASHINGTON, DC - JUNE 13: U.S. Defense Secretary James Mattis testifies before the Senate Armed Services Committee during a hearing in the Dirksen Senate Office Building on Capitol Hill June 13, 2017 in Washington, DC. Mattis and other Pentagon leaders testified about the proposed FY2018 National Defense Authorization Budget Request. (Photo by Chip Somodevilla/Getty Images)
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An injured man is transported after a car bomb attack in western Kabul, Afghanistan, on Monday, July 24.
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