The White House said the release of what it called “stolen cables” to several publications was a “reckless and dangerous action” and warned that some cables, if released in full, could disrupt American operations abroad and put the work and even lives of confidential sources of American diplomats at risk. The statement noted that reports often include “candid and often incomplete information” whose disclosure could “deeply impact not only U.S. foreign policy interests, but those of our allies and friends around the world.”

The cables, a huge sampling of the daily traffic between the State Department and some 270 embassies and consulates, amount to a secret chronicle of the United States’ relations with the world in an age of war and terrorism. Among their revelations, to be detailed in The Times in coming days:

¶ A dangerous standoff with Pakistan over nuclear fuel: Since 2007, the United States has mounted a highly secret effort, so far unsuccessful, to remove from a Pakistani research reactor highly enriched uranium that American officials fear could be diverted for use in an illicit nuclear device. In May 2009, Ambassador Anne W. Patterson reported that Pakistan was refusing to schedule a visit by American technical experts because, as a Pakistani official said, “if the local media got word of the fuel removal, ‘they certainly would portray it as the United States taking Pakistan’s nuclear weapons,’ he argued.”

¶ Thinking about an eventual collapse of North Korea: American and South Korean officials have discussed the prospects for a unified Korea, should the North’s economic troubles and political transition lead the state to implode. The South Koreans even considered commercial inducements to China, according to the American ambassador to Seoul. She told Washington in February that South Korean officials believe that the right business deals would “help salve” China’s “concerns about living with a reunified Korea” that is in a “benign alliance” with the United States.

¶ Bargaining to empty the Guantánamo Bay prison: When American diplomats pressed other countries to resettle detainees, they became reluctant players in a State Department version of “Let’s Make a Deal.” Slovenia was told to take a prisoner if it wanted to meet with President Obama, while the island nation of Kiribati was offered incentives worth millions of dollars to take in Chinese Muslim detainees, cables from diplomats recounted. The Americans, meanwhile, suggested that accepting more prisoners would be “a low-cost way for Belgium to attain prominence in Europe.”

¶ Suspicions of corruption in the Afghan government: When one of Afghanistan’s two vice presidents visited the United Arab Emirates last year, local authorities working with the Drug Enforcement Administration discovered that he was carrying $52 million in cash. With wry understatement, a cable from the American Embassy in Kabul called the money “a significant amount” that the official, Ahmed Zia Massoud, “was ultimately allowed to keep without revealing the money’s origin or destination.” (Mr. Massoud denies taking any money out of Afghanistan.)