A soldier poses for a photograph on the outer casing of an old, empty Soviet missile on exhibit at the military complex Morro Cabana which is open to tourists in Havana, Cuba, Oct. 13, 2012. The world stood at the brink of Armageddon for 13 days in October 1962 when President John F. Kennedy drew a symbolic line in the Atlantic and warned of dire consequences if Soviet Premier Nikita Khrushchev dared to cross it. On the eve of the 50th anniversary of the Cuban missile crisis, historians now say it was behind-the-scenes compromise rather than a high-stakes game of chicken that resolved the faceoff, that both Washington and Moscow wound up winners and that the crisis lasted far longer than 13 days. Ismael Francisco/AP
Miami area high school student Jeff Faustin (c.) attaches an aileron to a 41-foot surface-to-air Nike Hercules missile as students restore it at the George T. Baker Aviation school in Miami, Florida, October 10, 2012. To mark the 50th anniversary of the Cuban missile crisis, the students are restoring one of the original Nike Hercules missiles once tipped with a nuclear warhead and aimed at Cuba. The missile will be displayed at a decommissioned Cold-War era Nike Missile Base in Everglades National Park. Joe Skipper/Reuters
Soviet Premier Nikita Khrushchev and President John F. Kennedy talk in the residence of the US Ambassador in a suburb of Vienna, June 3, 1961. The meeting was part of a series of talks during their summit meetings in Vienna. Fifty years after the Cuban missile crisis, the National Archives in Washington has pulled together documents and secret White House recordings to show the public how President John F. Kennedy deliberated to avert nuclear war. AP
This photo, released by the US Department of Defense, shows Soviet missile equipment being loaded at the Mariel naval port in Cuba on Nov. 5, 1962. U.S. Department of Defense/AP
President John F. Kennedy (r.) confers with his brother Attorney General Robert F. Kennedy at the White House on Oct. 1, 1962 in Washington D.C. during the Cuban missile crisis. AP
Pickets representing an organization known as Women Strike for Peace carry placards outside the United Nations headquarters in New York City where the UN Security Council considers the Cuban missile crisis in a special meeting, Oct. 23, 1962. AP
Then-Maj. Richard 'Steve' Heyser (l.) and Gen. Curtis LeMay, then Air Force chief of staff (c.), meet with President John F. Kennedy in the White House in Washington in this 1962 picture, to discuss U-2 spy plane flights over Cuba. Heyser's photos of Soviet ballistic missile sites triggered the Cuban Missile Crisis that brought the world to the brink of nuclear war 43 years ago. Now retired and living in Apalachicola, Fla., Heyser says he was relieved the crisis ended peacefully because he didn't want to go down in history as starting World War III. AP
White House, new visitor security measures put into effect, 23 October 1962.
Robert Knudsen/White House Photographs
Cuban Prime Minister Fidel Castro replied to President Kennedy's naval blockade over Cuban radio and television, October 23, 1962. This picture of Castro during his speech was copied from television on a monitor set at Key West, Florida. AP
Journalists at a news conference in the Pentagon on Oct. 23, 1962 listen as Defense Secretary Robert S. McNamara, (l.) orders all Navy and Marine Corps enlistments and duty tours be extended for up to one year to support the arms blockade of Cuba. AP
US Ambassador Adlai Stevenson addresses the UN Security Council on the Cuban Missile Crisis, during a session at the United Nations headquarters in New York, on October 23, 1962. AP
Fidel Castro shakes hands with interim UN Secretary U.Thant after a meeting on the missile crisis in Havana, 1962. Prensa Latina/Reuters
Secretary of Defense Dean Rusk wears an earphone as he addresses an emergency meeting of the Organization of American States, Oct. 23, 1962, in Washington. He appealed to the group to back President Kennedy's military quarantine of Cuba and said: 'We have incontrovertible evidence that medium and intermediate range missile bases are being constructed by the Soviet Union in Cuba.' He added that such 'offensive weapons can reach into the far corners of our hemisphere with destructive force.' William J. Smith/AP
US Ambassador Adlai Stevenson (far r.) describes aerial photographs of launching sites for intermediate range missiles in Cuba during an emergency session of the United Nations Security Council at UN Headquarters at the height of the Cuban Missile Crisis, Oct. 25, 1962. Israeli Prime Minister Benjamin Netanyahu's use of a cartoon-like drawing of a bomb to convey a message over Iran's disputed nuclear program this week, follows in a long and storied tradition of leaders and diplomats using props to make their points at the United Nations. AP
President John F. Kennedy poses in his White House office with Gen. David Shoup (l.) Marine Corps Commandant, and Adm. George Anderson, Chief of US Naval Operations, Oct. 29, 1962. The chiefs met with the president to review the present situation in Cuba and operation of the US naval blockade. William J. Smith/AP
The US destroyer Barry pulls alongside the Russian freighter Anosov in the Atlantic Ocean, November 10, 1962, to inspect cargo as a US patrol plane flies overhead. The Soviet ship presumably carries a cargo of missiles being withdrawn from Cuba. The interception took place about 780 miles northeast of Puerto Rico. AP
The Cold-War era Nike Missile Base is seen in Everglades National Park in this undated aerial view released to Reuters October 12, 2012. To mark the 50th anniversary of the Cuban missile crisis, Miami area high school students at the George T. Baker Aviation school are restoring one of the original Nike Hercules missiles once tipped with a nuclear warhead and aimed at Cuba. The missile will be displayed at the decommissioned Cold-War era Nike Missile Base in Everglades National Park. National Park Service/Reuters
Hardline Islamist insurgents, including the Al Qaeda-linked Nusra Front, now control a second Syrian province after Raqqa, the stronghold of the Islamic State group. But ISIS isn't allied with the Islamists who tookover Idlib.
ByMariam Karouny, Reuters
Islamist groups including Al Qaeda's Nusra Front - but not ISIS - have seized the city of Idlib for the first time in Syria's civil war, fighters and a monitoring group said on Saturday.