WASHINGTON, DC - JANUARY 20: President Donald Trump delivers his inaugural address on the West Front of the U.S. Capitol on January 20, 2017 in Washington, DC. In today's inauguration ceremony Donald J. Trump becomes the 45th president of the United States. (Photo by Alex Wong/Getty Images)
NEW YORK, NY - JANUARY 13: President-elect Donald Trump gets into the elevator after speaking to reporters after his meeting with television personality Steve Harvey at Trump Tower, January 13, 2017 in New York City. President-elect Trump continues to hold meetings at Trump Tower in New York. (Photo by Drew Angerer/Getty Images)
US President-elect Donald Trump calls on a reporter during a press conference January 11, 2017 at Trump Tower in New York.
Trump held his first news conference in nearly six months Wednesday, amid explosive allegations over his ties to Russia, a little more than a week before his inauguration. / AFP / TIMOTHY A. CLARY (Photo credit should read TIMOTHY A. CLARY/AFP/Getty Images)
NEW YORK, NY - DECEMBER 14: President-elect Donald Trump speaks during a meeting with technology executives at Trump Tower, December 14, 2016 in New York City. This is the first major meeting between President-elect Trump and technology industry leaders. (Photo by Drew Angerer/Getty Images)
GOLDEN, CO - OCTOBER 29: Republican presidential nominee Donald Trump addresses a campaign rally in the Rodeo Arena at the Jefferson County Fairgrounds October 29, 2016 in Golden, Colorado. The Federal Bureau of Investigation announced Friday it discovered emails pertinent to the closed investigation of Democratic presidential nominee Hillary Clinton's private email server and are looking to see if they improperly contained classified information. Trump said "I think it's the biggest story since Watergate." (Photo by Chip Somodevilla/Getty Images)
CAMP LEJEUNE, NC - FEBRUARY 22: Sgt. Jarrod Simmons tries to motivate his squad of Marines before they head out on a 10 kilometer training march carrying 55 pound packs during Marine Combat Training (MCT) on February 22, 2013 at Camp Lejeune, North Carolina. Since 1988 all non-infantry enlisted male Marines have been required to complete 29 days of basic combat skills training at MCT after graduating from boot camp. MCT has been required for all enlisted female Marines since 1997. About six percent of enlisted Marines are female. (Photo by Scott Olson/Getty Images)
DORAL, FL - JULY 27: Republican presidential candidate Donald Trump holds a press conference at Trump National Doral on July 27, 2016 in Doral, Florida. Trump spoke about the Democratic Convention and called on Russia to find Hillary Clinton's deleted e-mails. (Photo by Gustavo Caballero/Getty Images)
President-Elect Donald Trump speaks in Des Moines, Iowa on December 8, 2016 during the USA Thank You Tour 2016 at the Hy-Vee Hall in the Iowa Events Center. / AFP / TIMOTHY A. CLARY (Photo credit should read TIMOTHY A. CLARY/AFP/Getty Images)
A S-200 surface-to-air missile is driven past Iranian military commanders during the annual military parade marking the anniversary of the start of Iran's 1980-1988 war with Iraq, on September 22, 2015, in the capital Tehran. AFP PHOTO / ATTA KENARE (Photo credit should read ATTA KENARE/AFP/Getty Images)
Marines pose with General James Mattis, Commanding General, CENTCOM, at the U.S. Embassy in Kabul, Afghanistan, on Sunday, May 8, 2011. (S.K. Vemmer/Department of State)Marines pose with General James Mattis, Commanding General, CENTCOM, at the U.S. Embassy in Kabul, Afghanistan, on Sunday, May 8, 2011. (S.K. Vemmer/Department of State)
NEW YORK, NY - NOVEMBER 17: Retired Lt. Gen. Michael Flynn gestures as he arrives at Trump Tower, November 17, 2016 in New York City. President-elect Donald Trump and his transition team are in the process of filling cabinet and high level positions for the new administration. (Photo by Drew Angerer/Getty Images)
A picture taken on August 20, 2010 shows an Iranian flag fluttering at an undisclosed location in the Islamic republic next to a surface-to-surface Qiam-1 (Rising) missile which was test fired a day before Iran was due to launch its Russian-built first nuclear power plant. Iranian Defence Minister Ahmad Vahidi said the missile was entirely designed and built domestically and powered by liquid fuel. AFP PHOTO/VAHID REZA ALAEI (Photo credit should read VAHID REZA ALAEI/AFP/Getty Images)
Russia's President Vladimir Putin holds a glass during a ceremony of receiving diplomatic credentials from foreign ambassadors at the Kremlin in Moscow on November 9, 2016. / AFP / POOL / SERGEI KARPUKHIN (Photo credit should read SERGEI KARPUKHIN/AFP/Getty Images)