Since 2002, winners from the Canadian national competition have been competing in the international challenge.

Our nation is clearly divided on the basic response to the international challenges that confront us.

Undoubtedly, the Bush team can manage the daily government and meet international challenges.

They regularly attract major British names and a host of international challenges.

In this view, the major international challenge has been to respond with a careful balance of military force and negotiation.

There really needs to be a wholesale international challenge to the way in which these three agencies operate.

What domestic and international environmental challenges will we face?

Then we have to give a common response to the international challenges related to security, freedom and justice.

Climate change was referred to in many addresses as the most urgent international challenge.

Its first official international challenge began with a successful bid by England in 1961.