Cameron's aides stressed that the meeting was purely about how to implement the health bill, and was not a discussion about potential concessions.
But aides stressed there would be little point in him staying to implement a plan to which he and Mr Livingstone were strongly opposed.
Privately, Glencore's aides insist the firm is stable and talk about continuing to implement "its debt reduction plans", a programme to cut borrowings by $10bn that was forced on it by shareholders and announced earlier this month.
In some ways, Mr. Romney is trying to implement a modified version of the strategy that a senior aide to Hillary Rodham Clinton suggested for the then-frontrunner in the 2008 Democratic nomination contest.
Robertson, an aide to President Obama, was meeting with top officials from federal agencies working to implement the Affordable Care Act.
Aides say he personally persuaded the Treasury Department's Stuart Levey, who looked for creative ways to implement Mr. Bush's sanctions policy, to stay on.
Her proposals seek to implement reforms like boosting teacher pay and upping the number of school aides and counselors around the state, according to a press release on Your Houston News.
Afterward, Nabil Aburdeineh, a close aide to Mr. Arafat, told The Associated Press that Israel had imposed new conditions that were "impossible to accept or even to implement".
We can still implement what we want to implement.
Mr. Stone has advised Mr. Sharpton before national debates, encouraged him to implement a "rapid response" system, and introduced him to the man who became his national campaign manager, Charles Halloran, the aides said.
