The continuing lack of security represents a serious challenge to the objectives of the Security Council.

A number of speakers pointed out that money laundering also posed a serious challenge.

Land mines are particularly injurious to children and so constitute a serious challenge for UNICEF.

Small arms and light weapons pose a great challenge to the maintenance of peace and security in the Caribbean region.

We recognize that trafficking in persons continues to pose a serious challenge to humanity and requires a concerted international response.

Acknowledging that poverty, among other factors, represents a serious challenge to the full and effective participation and contribution of young people to society,

Progress in the political process remains heavily influenced by the security situation, which continues to pose a serious challenge.

The consequences of the recently aggravated problem of forced migration and the influx of refugees constitute a serious challenge to security and stability in Europe.

Comparing the progress of the least developed countries with the progress of other developing countries on these goals, however, presents a serious challenge.

There is therefore a serious challenge of role and of means affecting the United Nations and other organizations in Bosnia and Herzegovina.

The Union is firmly committed to urgent global action to mitigate climate change a serious, long term challenge for every part of the world.

The discovery of an extensive black market network in nuclear materials and technologies posed a serious challenge to the nuclear non proliferation regime.

The putsch of 21 October 1993 was therefore a serious challenge to the new Africa that the OAU and the African States are trying to build.

The Secretary General's report states clearly that the absence of infrastructure remains a serious challenge and has a broad range of implications.

24. The fundamental changes which had shaken the world over the previous few years had created great opportunities for the international community, while also posing formidable challenges.

We are now facing the acute challenge of how to overcome, soon, our state of poverty and underdevelopment, and join the mainstream of progress in the region.

Sounds pretty serious. Well, it's not serious yet.

External debt servicing was a serious challenge to developing countries and economies in transition, especially in Africa.

The presence of uncleared land mines poses a serious challenge to date to those humanitarian assistance efforts and often prevents the achievement of key humanitarian objectives.

Therefore, turning the Programme of Action from something on paper into reality is a grave challenge which calls for untiring efforts and political sincerity from all parties.

Recognizing that contemporary forms of slavery violate human rights and that trafficking in persons impairs the enjoyment of human rights, continues to pose a serious challenge to humanity and requires a concerted international response,

The Democratic People's Republic of Korea's nuclear programmes pose a serious challenge to the international non proliferation regime, centring on the NPT, and constitute a direct threat to peace and stability in North East Asia.

The emergence of non State actors threatening the safety of sovereign nations was a serious challenge to international peace and security which was assuming an increasingly lethal character owing to the indiscriminate targeting of civilians and children.

Because we are confronted with a challenge.

Rushmore, which happened to be one of our most challenging projects.

Do I hear a challenge?

Mr. Minty (South Africa) said that revelations about the existence of an illicit network for trafficking in nuclear material, equipment and technology presented a serious challenge to the NPT and to the non proliferation regime in general.

Fadil became a dangerous man.

Sami became a dangerous fanatic.

This represents a dangerous trend.

I think it's dangerous.

It's probably not serious

He has become too dangerous.

Strangways. It looks serious.

Sami wasn't a dangerous guy.

That was dangerous, all right.

And that can be extremely dangerous.

I hope it is nothing serious.

What else is risky?

You know the uni is the most challenging, so number ten is challenging.

Developing the Skycar has been a real challenge.

We also face an environmental challenge.

I think it's a great challenge.

Your job needs to be challenging.

They're going to be the tough ones.