But, whether out of rage or calculation, Mr Obama and Mrs Clinton preferred to escalate.
It is all too easy to imagine Mr Obama and Mrs Clinton disagreeing messily.
Still, organised labour has little incentive to continue picking losers, and Mrs Clinton remains the presumptive nominee.
Both Mr Obama and Mrs Clinton sidestepped questions about whether she might run for the presidency in 2016.
BBC: Barack Obama praises Hillary Clinton in joint interview
Both Mr Gore and Mrs Clinton paid their respects after some mildly threatening public statements by Mr Sharpton.
However, she and Mrs Clinton, as US secretary of state, have had to work closely together in the Obama administration.
And Mrs Clinton's campaign seems to be as confused about its identity as any of the paraders in Greenwich Village.
Free trade is a sensitive issue for the Democrats and Mrs Clinton was anyway unhappy with Mr Penn's recent performance.
On Thursday, Mr Karzai met Mr Panetta and Mrs Clinton, both of whom are leaving their posts within the Obama administration.
However, she and Mrs Clinton, as the future US secretary of state, will have to work closely together in the Obama administration.
But John McCain, the Republican nominee apparent, now enjoys a 67% approval rating, according to Gallup, against Mr Obama's 62% and Mrs Clinton's 53%.
The Clintons have always regarded politics as a continuation of war by other means, and Mrs Clinton is an even tougher fighter than her husband.
Police were called and broke down the door to find the house filled with gas fumes and Mrs Clinton dead in the living room, the jury heard.
Foreign ministers of the 10-nation bloc are meeting in the Cambodian capital with counterparts from the region including China, and Mrs Clinton and European Union representative Catherine Ashton.
If other superdelegates come to believe that Mr Obama is a unifier and Mrs Clinton is a dividing force, the young senator from Illinois may prove stronger than ever.
Mr Obama and Mrs Clinton have remarkably few ideological differences: they are both pragmatists who believe in working through diplomacy if possible but in resorting unhesitatingly to force if necessary.
Losing narrowly is still a good result under this system... and it means it is perfectly possible for the contest between Mr Obama and Mrs Clinton to go on for several months yet, especially if Mr Edwards is forced out in the near future.
BBC: NEWS | Americas | Win fires up Obama supporters' belief
He has been a close adviser to the Clintons for well over a decade, working on Bill Clinton's re-election in 1996 and nudging Mrs Clinton towards the centre in her Senate career.
Mr Kelly was born in Portroe, County Tipperary, and advised Mrs Clinton during her campaign for the presidency.
Remarkable stuff and more proof of Mrs Clinton's political maturity and ambition.
As Mrs Clinton and Mr Obama continue to slug it out for the Democratic nomination, Israel's preference for Mrs Clinton may yet push more Jewish voters her way.
If Mr Obama should defy polls which on average show his opponent ahead by five to six points and win, Mrs Clinton will almost certainly drop out of the race.
ECONOMIST: Pennsylvania primary: The push in Pennsylvania | The
Others in Mr Clinton's top tier such as Madeleine Albright and Richard Holbrooke backed Mrs Clinton, leaving room for up-and-comers to nab the best spots in the Obama campaign.
Depressed Clinton took the break up badly and on 14 November last year he "torched" Mrs Clinton's "pride and joy" - a purple Land Rover she called Fred, the court heard.
His opposition to the Iraq war stands him in good stead, too, in contrast to Mrs Clinton and Mr McCain.
Both Mrs Clinton and Mr Obama propose a host of new programmes for schools, described on their websites if rarely on campaign.
ECONOMIST: The missing debate over schools and accountability
The former marine has galvanised the members to send letters of support to Mrs Clinton and messages of reproach to opponents of her husband.
Mrs Clinton and Ms Suu Kyi had a private dinner in Rangoon before holding a more formal meeting at Ms Suu Kyi's residence on Friday.
BBC: Clinton pledges improved Burma ties if reforms continue
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