As previously reported (A 59 581 S 2004 925, paras. 23 and 24), the task of training, staffing and sustaining an effective police force has proved to be challenging.

Establishing a frame of reference for measuring the performance of the RCF proved particularly challenging, as data was not being collected and monitored for the purpose of assessing outcomes and impact for the period under review.

A bit more challenging, right?

A bit more challenging, right? (Laughter)

But striking the proper balance is challenging.

That will be particularly challenging for Bernanke.

That is an assumption that needs challenging.

Emerging and challenging issues deriving from implementation

That proved decisive.

Finally, Japan s external environment today is more challenging.

However, the situation in Cité Soleil remains challenging.

Russia s calculations proved correct.

But, in the end, ordinary Germans have been proved right, and the elites have been proved wrong.

Two serious problems make reconciliation in Afghanistan particularly challenging.

But success in Cairo might prove even more challenging.

This means that Europe probably faces another challenging year.

The selection of indicators has proven to be challenging.

Women challenging these norms are punished by violent means.

Emerging and challenging issues deriving from implementation and necessary

That hope soon proved illusory.

Sadly, his prediction proved correct.

The year ahead will be challenging and rife with uncertainty.

Everything we do, we believe in challenging the status quo.

You can see the trapezoids are a little challenging there.

Fortunately, such a way immensely challenging but nonetheless feasible exists.

This category is especially useful for solving especially challenging problems.

In this challenging environment, administrative infrastructures have continued to function.

This has been particularly challenging in remote and insecure areas.

These have indeed been very challenging times for our Organization.

Elsewhere, change proved far more complicated.

China s victory proved to be Pyrrhic.

The aid skeptics were proved wrong.

Kennedy had proved a powerful truth.

But appearances proved to be deceptive.

This assessment proved to be correct.

America, however, is not alone in challenging Al Jazeera head on.

Aside from clarity, it is important that group goals be challenging.

The Second Great Awakening was challenging women's traditional roles in religion.

Determining an optimal level of accountability for results is also challenging.

Some individuals and entities have filed multiple lawsuits challenging their listing.

Some local journalists and civil society groups are challenging the credibility of some of the results, and the CPC is challenging the outcome of the presidential vote at the INEC.

But keeping the group small proved impossible.

The crisis proved that this was inadequate.

It proved to be a moderate success.

(i) Where the charge has proved groundless