Chat with us in Facebook Messenger. Find out what's happening in the world as it unfolds.

(FILE) This file picture dated 02 December 2006 shows Cuba's President Raul Castro at Revolution Square in Havana, during a military parade celebrating President Fidel Castro's 80th birthday and the 50th anniversary of the Cuban Revolution. Raul Castro will celebrate on June 3, 2011 his 80th birthday. AFP PHOTO/ADALBERTO ROQUE (Photo credit should read ADALBERTO ROQUE/AFP/Getty Images)

WASHINGTON, DC - DECEMBER 9:  US President Barack Obama speaks at an event for the Senior Executive Service at the Washington Hilton on December 9, 2014 in Washington, DC. The Senior Executive Service (SES) is composed of the senior leadership of the Federal workforce. (Photo by Olivier Douliery-Pool/Getty Images)
(FILE) This file picture dated 02 December 2006 shows Cuba's President Raul Castro at Revolution Square in Havana, during a military parade celebrating President Fidel Castro's 80th birthday and the 50th anniversary of the Cuban Revolution. Raul Castro will celebrate on June 3, 2011 his 80th birthday. AFP PHOTO/ADALBERTO ROQUE (Photo credit should read ADALBERTO ROQUE/AFP/Getty Images)

WASHINGTON, DC - DECEMBER 9:  US President Barack Obama speaks at an event for the Senior Executive Service at the Washington Hilton on December 9, 2014 in Washington, DC. The Senior Executive Service (SES) is composed of the senior leadership of the Federal workforce. (Photo by Olivier Douliery-Pool/Getty Images)

    JUST WATCHED

    Expert: Meeting is the 'last vestige of the Cold War'

MUST WATCH

Expert: Meeting is the 'last vestige of the Cold War'

Professor Chris Sabatini speaks to CNN's Jonathan Mann about the historic meeting between U.S. President Barack Obama and Cuban President Raul Castro.

Expert: Meeting is the 'last vestige of the Cold War'

Professor Chris Sabatini speaks to CNN's Jonathan Mann about the historic meeting between U.S. President Barack Obama and Cuban President Raul Castro.