It is difficult to prove a negative.

Foreign policy, too, may prove difficult to manage.

It is difficult to prove discrimination based on labor.

However, social scientists have found it difficult to prove that point.

After all, without appropriate statistics, it is difficult to prove discrimination.

This will prove more difficult than it first sounds.

Such cases were often difficult to prove beyond a reasonable doubt in court.

The application of the above criterion to a given case may prove difficult.

It is extremely difficult to prove a policy of intentionality when conducting human rights investigations.

First, they are not easy to detect with confidence, and are even more difficult to prove.

Indeed, completing the negotiations is likely to prove as difficult as the decision to start them.

Second, reintegrating the unemployed even into a smoothly functioning market economy would prove to be very difficult.

Some provisions of the draft convention could prove difficult to reconcile provisions of Directive 2000 31 EC

But coming up with an approach that gains broad international support will prove extremely difficult.

Fraud is difficult to prove, because managers can always say that they thought the odds were better than were.

It is difficult to prove that fragmentation is being effected for tax purposes and for no other valid reason.

But it was difficult to prove the source of the attack, and the Pentagon had to shut down some of its computer systems.

G 20 leaders need again to manage difficult domestic pressures, overcome narrow agendas and resist populist temptations and prove the sceptics wrong.

The emergence of a non polar world could prove to be mostly negative, making it more difficult to generate collective responses to pressing regional and global challenges. More decision makers make it more difficult to make decisions.

It was similarly noted that, although eliminating the effective link requirement sounded simple in principle, it might prove to be difficult in practice.

The new relationship with Russia needs careful management, and rapid extension of membership to former Soviet republics like Ukraine and Georgia could prove difficult.

But, as we have seen elsewhere in the region, it will prove far more difficult to put something benign and effective in its place.

The requirement to work in partnership with a local partner may prove particularly hard to fulfil, finding a suitable local partner often being more difficult than perceived.

Although ECT s opponents believe that it causes brain damage, this is difficult to prove. Like antipsychotic drugs, antidepressants, and tranquilizers, ECT has an immediate organic effect.

Politically, too, the process of adjustment by deflation in deficit countries is so unpleasant and difficult that many pessimists think it will ultimately prove to be unsustainable.

That said, Europe s disparities in production costs and competitiveness, reflected in the problem countries substantial current account deficits, may prove to be an even more difficult problem to resolve.

And that could prove to be even more difficult, because the current closed nature of the medical information system and its self directed incentive structure block such sharing.

If current levels of low investment and high unemployment continue, especially in the more diversified economies, they may prove difficult to reverse when the social consequences become evident.

Nepal has had a long history of monarchy, spanning close to two and a half centuries, and bringing an end to this tradition might prove to be more difficult than expected.

Accurate analysis of what is taking place on the ground is essential, but this can prove difficult in an echo chamber of globalized cultural icons.

This change will prove difficult for the EU, because its companies will face a tighter set of targets than competitors in the US or elsewhere.

Russia s government is now doing its best to prove that, while difficult, it is possible to defy the laws of business physics and kill investments that are already in the pipeline.

Some grey areas and potentially difficult issues remain where the parties may have differing interpretations of the texts that could prove controversial at a later stage.

Third, just as a new version of existing software often creates compatibility problems with files created with older versions, for EMU, too, transition to the new regime may prove difficult.

Since, when negotiating treaties, States did not usually consider the effect that going to war might have on a given treaty, their intention in that regard might be absent or difficult to prove.

Compliance with this type of obligation may prove difficult for an international organization when action presupposes that a certain majority is reached within a political organ of the organization.

Above all, SDR s represent liquidity and can be allocated only if and when there is a global need, which would currently be difficult to prove given highly liquid and easy international capital market conditions.

It is difficult for an individual to establish that discrimination based on sex has occurred, since it is often complicated to prove that a person has been placed in a less favourable position because of gender.

If declining confidence in US fiscal policy leads to a weaker dollar, Europe and Asia may find it more difficult to export, and if the deficits prove a drag on the American economy, global growth may stall.

That may still prove to be wishful thinking.

It needs only the opportunity to prove itself.

Unfortunately this is not always easy to prove.

And yet China will find it increasingly difficult to postpone stronger measures that would appease popular demands for fairness, including the establishment of an independent judiciary, which could prove to be no less an imperative than structural economic reforms.

Some delegations also observed that the provision raised practical problems, since the identification of the nationality of shareholders would prove difficult, and might generate a multiplicity of claims against the State presumed to have caused the injury.

And to prove it, she says, The exact size and shape of these tabletops is the same, and I'm going to prove it to you.