"We cannot go to South Africa with four or five doubtful players, " he added.
As a result, Nadjia Bouaricha writes in El Watan , "national public opinion has been the hostage of foreign media outlets distilling snippets of information gleaned from this or that news agency or this or that often doubtful source".
It is doubtful that the Fed or the Obama administration has a Plan B for dealing with any such shock.
Whether they are convincing enough to persuade the president or, indeed, the Congress or the American people is highly doubtful.
Stretch it too far, by making promises that can't or won't be kept or by bringing in countries of doubtful military value, and the alliance will unravel.
ECONOMIST: Enlarging too far, too fast, could bust the alliance
"If a store is only marginally profitable, any further costs like this might mean either they won't build new stores where they're doubtful about profitability, or they might close stores that might become unprofitable in the future, " Mr Naish said.
It is doubtful if either Mr Blair or Mr Ashdown yet knows clearly how fast and how far their engagement might extend.
It is not Dragon's Den, but it is doubtful that responsible charitable trusts or institutional investors will be committing wads of cash to a payment-by-results mentoring scheme for ex-offenders without good evidence that it can get those results.
In any case, it would come as no shock to a man or woman of the world to discover that doubtful loans were significantly higher than the sums officially acknowledged.
In a region where four of the five countries (Finland is the exception) are either doubtful about joining the single European currency or certain not to, there is a reluctance to swallow nostrums from abroad.
Professor Tim Morris, who heads the program and has studied the way leaders help or hinder innovation within their organization, says he is doubtful about the notion of the "heroic" leader, a charismatic, totemic figure who pulls subordinates along in his or her all-powerful wake.
One clear danger is that they may alienate customers, who will welcome better service but may be more doubtful about uses of the technology such as finely segmenting the market or targeting customers individually.
It is doubtful that any other American President was ever on the ballot so often or so successfully.
If the reason is doubtful, so is the result: the process of choosing which equity analyst stays or which sales team keeps which account is likely to be contentious in all but the few areas where one firm has a decided edge (where it will merely be brutal).
However, with centre-back William Gallas also doubtful having hobbled off against Liege with an ankle injury, Wenger could start Mikael Silvestre, or even move either centre-back Thomas Vermaelen or right-back Bacary Sagna to the left.
The numbers may be either too high or too low depending on how the economy is going at any given time, and I am really doubtful anyone has the ability to cast in stone the proper standards.
Whether there was a jurisdiction to make that order is very doubtful for the reasons given in my earlier judgment but in any event the order had been (or should have been) discharged by the time the Contested Notice was published.
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