Paul D. Miller is a professor of the practice of international affairs at Georgetown University and a senior fellow at the Atlantic Council. He served as director for Afghanistan and Pakistan on the U.S. National Security Council staff from 2007 through 2009.
A group of men stand before an ice sculpture of a Hwasong-15 intercontinental ballistic missile at an ice sculpture festival in Pyongyang, North Korea, on Dec. 31, 2017. (Kim Won-Jin/AFP/Getty Images)
US President Donald Trump gives a speech in front of the Warsaw Uprising Monument on Krasinski Square on the sidelines of the Three Seas Initiative Summit in Warsaw, Poland, July 6, 2017. / AFP PHOTO / JANEK SKARZYNSKI (Photo credit should read JANEK SKARZYNSKI/AFP/Getty Images)
Afghan National Army (ANA) soldiers patrol the Shah Wali Kot district of Kandahar province on May 23, 2017.
At least 10 Afghan soldiers were killed when militants attacked their army base in the southern province of Kandahar, the defence ministry said May 23, in the latest attack on Western-backed forces. / AFP PHOTO / JAVED TANVEER (Photo credit should read JAVED TANVEER/AFP/Getty Images)
Fire and smoke billow following a reported car bomb explosion at a Syrian pro-government position during clashes between rebel fighters and regime forces to take control of an area in the southern city of Daraa on February 20, 2017. / AFP / MOHAMAD ABAZEED (Photo credit should read MOHAMAD ABAZEED/AFP/Getty Images)
Michael Anton, National Security Adviser, waits in the East Room of the White House in Washington of the start of President Donald Trump's news conference, Thursday, Feb. 16, 2017. (AP Photo/Pablo Martinez Monsivais)
NEW YORK, NY - FEBRUARY 8: (L to R) The Governors Island Ferry and the Staten Island Ferry pass the Statue of Liberty in New York Harbor, February 8, 2017 in New York City. As temperatures touched 60 degrees on Wednesday, the city is preparing for up to a foot of snow on Thursday. (Photo by Drew Angerer/Getty Images)
Latvian soldiers march during a military parade on November 18, 2008 to celebrate Latvia's 90th anniversary of independence from Russia, an era of freedom that was snuffed out by the Soviet Union after World War II and only restored in 1991. Nationalism rose in Latvia towards the end of the 19th century, culminating in a declaration of independence on November 18, 1918, after World War I and two revolutions in Russia had brought down the Tsarist empire. Latvia joined the European Union and NATO in 2004. AFP PHOTO/ILMARS ZNOTINS (Photo credit should read ILMARS ZNOTINS/AFP/Getty Images)
INDIANAPOLIS, IN - APRIL 27: Republican presidential candidate Donald Trump addresses the crowd during a campaign rally at the Indiana Farmers Coliseum on April 27, 2016 in Indianapolis, Indiana. Trump is preparing for the Indiana Primary on May 3. (Photo by John Sommers II/Getty Images)
US President Barack Obama (R) waves to troops at Bagram Air Base on March 28, 2010. Obama thanked the Afghan people and US troops for their sacrifices in the war in Afghanistan, and vowed to reverse the Taliban's momentum. AFP PHOTO/Jim WATSON (Photo credit should read JIM WATSON/AFP/Getty Images)
