Our eyes are wide open to the realities, the formidable challenges, the inevitable threats, and the fragility of progress.

我们已睁开双眼，看到了事实、令人生畏的挑战、不可避免的威胁和不够稳固的进展。

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In face of such threats and challenges, no country can manage alone or stand aloof.

面对威胁和挑战，任何国家都难以独善其身或置身事外。

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"It should really serve,I think, as a stimulus to us to find ways to recapture the partnership so we can join forces and fight together against the threats and challenges of the 21st century that are no less dangerous than Hitler was in his time."

VOA: standard.2010.05.07

As our region is consumed by the flames of rebellion and revolution, the challenges and threats Israel faces multiply by the day.

CENTERFORSECURITYPOLICY: Playing Israel's good hand

In an age of expanding opportunities but also of grave dangers, we share fundamental interests and values just as we face common challenges and threats.

WHITEHOUSE: President Obama and Prime Minister Harper Press Conference | The White House

Portugal and the United States want a reinvigorated alliance, which will be capable of responding in an efficient manner to the challenges and threats transatlantic security may be faced with.

WHITEHOUSE: President Obama Meets with President Silva