UNITED STATES

After Chuck Hagel's resignation, a woman may lead the Pentagon for the first time.

A cluster of islands in the South China Sea will be a reason China and the U.S. will always struggle to get along.

Samsung CEO J.K. Shin could be replaced as the company makes efforts to turn around from its abysmal 2014.

U.S. Defense Secretary Chuck Hagel's sudden resignation follows a long career as a statesman, military mind and foreign policy leader.

President Obama announced the departure of Defense Secretary Chuck Hagel, who leaves at an important time for the future of fighting ISIS.

Reason No. 1? Critics say Chuck Hagel didn't understand the Middle East.

“Clouds are gathering over the global economic outlook, presenting the darkest picture seen since the global financial crisis."

President Obama asked the Defense Secretary to step down on Friday. The move has been in the works for two weeks.

Diplomats have said that progress had been made, but key issues remain between world powers and Iran, including nuclear weapon research.

Have a Happy Tofurky Day with these turkey-free holiday meals.

While diagnoses of ADHD were once an American trend, doctors around the world are now labeling more and more patients with the condition.

In recent days, the two countries have taken significant steps to mend relations with each other.

The fall in oil prices is also affecting the Russian economy significantly and led another official to call the sanctions "blackmail."

Fund managers are divided over whether OPEC will reach an agreement on cutting output.

The three new Expedition 42 crew members will spend 169 days in orbit, before returning to Earth in May 2015.

Obama reportedly said that there were many Democratic candidates who would make “terrific presidents,” but only mentioned Clinton by name.

A grand jury's decision on the controversial shooting death, in August, of a black teen by a white police officer, was expected Friday.

Talks between Iran and six powers are expected to fail to reach a deal to lift sanctions by a deadline on Monday.

The nearly five-hour lockdown was triggered after a driver with a suspicious vehicle was spotted at Fort Sam Houston.

Chinese stock markets rallied, with a key index at its highest level in around one-and-a-half years.

Saul Berenson's prisoner exchange didn't go as planned during Season 4, episode 9 of "Homeland."