US President Donald Trump (L) and US Secretary of State Rex Tillerson wait for a meeting with South Korea's President Moon Jae-in and others in the Cabinet Room of the White House June 30, 2017 in Washington, DC. / AFP PHOTO / Brendan Smialowski (Photo credit should read BRENDAN SMIALOWSKI/AFP/Getty Images)
Russia's Prime Minister Vladimir Putin (L) speaks with ExxonMobil President and Chief Executive Officer Rex Tillerson during the signing of a Rosneft-ExxonMobil strategic partnership agreement in Sochi on August 30, 2011. Russia's oil champion Rosneft and US ExxonMobil clinched a global deal worth up to half-a-trillion dollars that will see the US supermajor take BP's place in pioneering Arctic exploration work. AFP PHOTO / RIA NOVOSTI / POOL / ALEXEY DRUZHININ (Photo credit should read ALEXEY DRUZHININ/AFP/Getty Images)
WASHINGTON, DC - JANUARY 26: The U.S. State Department is shown January 26, 2017 in Washington, DC. Four senior management team members at the State Department resigned January 25, adding to an exodus of career senior foreign service officers who have recently resigned their positions. (Photo by Win McNamee/Getty Images)
WASHINGTON, DC - SEPTEMBER 12: A sign stand outside the U.S. State Department September 12, 2012 in Washington, DC. U.S. Ambassador to Libya J. Christopher Stevens and three other Americans were killed in an attack on the U.S. Consulate in Benghazi, Libya. (Photo by Alex Wong/Getty Images)
The US State Department is seen on November 29, 2010 in Washington, DC. Top US diplomat Hillary Clinton accused WikiLeaks of an "attack" on the world, as key American allies were left red-faced by embarrassing revelations in a vast trove of leaked memos. In a lengthy statement, the secretary of state attempted damage limitation as she told reporters the United States "deeply regrets" the release of the 250,000 diplomatic cables, all apparently from the State Department. AFP PHOTO / Nicholas KAMM (Photo credit should read NICHOLAS KAMM/AFP/Getty Images)
Sudanese President Omar al-Bashir (C) chairs the general assembly for the national dialogue on August 20, 2015 in the capital Khartoum. Bashir said he was ready for a two-month ceasefire with rebels in Sudan's border regions to allow national dialogue talks to take place to address the country's myriad problems, offering insurgents an amnesty. AFP PHOTO/ ASHRAF SHAZLY (Photo credit should read ASHRAF SHAZLY/AFP/Getty Images)
