North Korea state media confirms arrest of US professor

North Korea on Wednesday confirmed the arrest of a US professor for trying to "overturn" the regime, as tensions spike between the isolated nuclear-armed nation and Washington.Kim Sang-Duk, or Tony Kim, became the third American held in the North when he was detained at the capital's airport on April 22 as he tried to leave the country, after teaching for several weeks at an elite university.In the North's first confirmation of the professor's detention, the official Korean Central News Agency (