The rising power of a militant group called al-Shabab in neighboring Somalia has also added a new security challenge in the region.

VOA: standard.2009.05.01

The winner will face a tough challenge in the general election against long-time liberal Democratic Senator Barbara Boxer.

VOA: standard.2010.06.08

But,he says,ease of mobility still is a frequent challenge in his low-income Bronx neighborhood.

VOA: standard.2010.07.27

Next month,the former Alaska governor heads to Arizona to campaign for her former running mate, Senator John McCain, who faces a challenge in the Republican primary from former Representative J.D.Hayworth.

VOA: standard.2010.02.09

The American Le Mans Series became the first racing event to use the protocols in its Green Challenge competition.

VOA: special.2009.11.03

Ten children ages eight to fourteen were in New York recently for the finals of this year's Discovery/3M Young Scientist Challenge.

VOA: special.2009.10.15

He says the biggest challenge is jobs the disabled have the lowest employment rate of any minority group in the country.

VOA: special.2009.08.15

And that is a major challenge." Larry Graham,president of the National Confectioners Association in Washington, represented industry groups at the launch of the framework.

VOA: special.2010.10.26

A challenge that affects parents, children and citizens in almost every community in America should not be a Democratic problem or a Republican problem.

VOA: special.2010.08.12

"This has clearly been a systemic challenge for financial stability in the euro area.

VOA: special.2010.05.14

Palin recently campaigned in Texas, where Republican Governor Rick Perry faces a primary challenge from Senator Kay Bailey Hutchison.

VOA: standard.2010.02.09

But Waziristan, just south of the valley in the Federally Administered Tribal Areas, presents a very different challenge for the military.

VOA: standard.2009.06.18

And he is praising four committees in Congress for agreeing on what he calls "a difficult and complex challenge."

VOA: standard.2009.08.08

Working in so many different genres, Williams says his daily challenge is coming up with the right sound for a show,movie,or album.

VOA: standard.2010.07.20