Each leader brings his own spokesman, and the two will jointly brief the press after the sessions here.
The directors of the Federal Bureau of Investigation and the Central Intelligence Agency now jointly brief the president on terrorist threats, but there are still critical gaps in intelligence gathering and analysis.
Several times he has told audiences that he is working on solving that problem, and these days he is briefed jointly by the F.B.I and the C.I.A., ensuring that each hears information from the other agency.
Mr. Kouchner, who briefed the Security Council jointly with Gen. Klaus Reinhardt, the military commander of the NATO-led peacekeeping forces, invited the 15-member Security Council to travel to Kosovo to see the situation on the ground.
Subrata Ghoshroy, a research associate at the Massachusetts of Institute of Technology, recalls working as a congressional staff member in the mid-1990s when he was briefed on the Nautilus laser, which was jointly sponsored by the United States and Israel.
And the various regulators are still not certain if they will jointly announce the UBS settlement this month, according to the people briefed on the matter.
In this instance, however, Rodriguez's lawyers and the federal authorities jointly agreed to push back the meeting, according to several people who were briefed on what occurred but did not want to be identified discussing a continuing investigation.
The proposed agreement, according to people who have been briefed on the talks, calls for initial committee members to be chosen jointly by Dow Jones and the News Corporation.
Senior officials briefed on the mission said that the Yemeni Coast Guard had conducted the operation jointly with American military forces.
While prosecutors and regulators have jointly conducted dozens of depositions with former and current employees, a senior executive in the Chicago office of MF Global recently declined to meet with the federal authorities, people briefed on the investigation said.
