The New York Times reports: On the morning of March 13, 2011, the assistant secretary of state for Near Eastern affairs, Jeffrey D. Feltman, wrote an urgent email to more than two dozen colleagues informing them that Saudi Arabia and the United Arab Emirates were sending troops into Bahrain to put down antigovernment protests there.

Mr. Feltman’s email prompted a string of 10 replies and forwards over the next 24 hours, including to Secretary of State Hillary Clinton, as the Obama administration debated what was happening and how to respond.

The chain contained information now declared classified, including portions of messages written by Mr. Feltman; the former ambassador in Kuwait, Deborah K. Jones; and the current director of the Central Intelligence Agency, John O. Brennan.

The top administration officials discussed the Bahrain situation on unclassified government computer networks, except for Mrs. Clinton, who used a private email server while serving as secretary of state.

Her server is now the subject of an F.B.I. investigation, which is likely to conclude in the next month, about whether classified information was mishandled.

Whatever the disposition of the investigation, the discussion of troops to Bahrain reveals how routinely sensitive information is emailed on unclassified government servers, reflecting what many officials describe as diplomacy in the age of the Internet, especially in urgent, fast-developing situations. [Continue reading…]