"What you have seen today is just the beginning of a long campaign, " says political activist Kim Min Sik.

CNN: Pains from the Past

"We do not rule out the possibility of North Korea being involved, but it's premature to say so, " Defence Ministry spokesman Kim Min-seok said.

BBC: South Korea network attack 'a computer virus'

The second controversial match took place about an hour later, pitting South Korea's Ha Jung-eun and Kim Min-jung against the Indonesians Meiliana Jauhari and Greysia Polii.

CNN: STORY HIGHLIGHTS

The second match in question took place about an hour later, pitting South Korea's Ha Jung-eun and Kim Min-jung against the Indonesians Meiliana Jauhari and Greysia Polii.

CNN: Olympic badminton players disqualified for trying to lose

South Korean Defense Ministry spokesman Kim Min-seok told reporters Tuesday there were no signs that North Korea could conduct additional nuclear and missile tests anytime soon, or launch some other provocation.

NPR: US Institute: All Quiet At NKorea Test Sites

On Thursday, a spokesman for the South Korean Defence Ministry, Kim Min-seok, said Pyongyang had been observed carrying out "various drills involving the army, navy and air force, " and that further exercises were being prepared, the Yonhap news agency reports.

BBC: North Korea ramps up nuclear rhetoric as UN vote looms

That's according to Kyung-Min Kim, a professor of political science and diplomacy at Hanyang University in Seoul who in 1992 became the first foreigner to study at the Japanese Institute of Defense Studies.

FORBES: Magazine Article

In badminton, Kim Dong Moon , 25, and Ra Kyung Min , 24, have won their last 11 mixed-doubles tournaments.

CNN: South Korea: More Than Kicks