US Senate votes to impose tougher sanctions against North Korea
The US Senate has voted unanimously in favour of tougher sanctions against North Korea, after the country's recent nuclear and rocket tests.
It targets anyone who directly or indirectly helps Pyongyang's weapons proliferation or human rights abuses.
On Thursday, South Korean workers started withdrawing from the industrial park jointly run by the two Koreas.
It comes after South Korea suspended its operations at the Kaesong industrial park on Wednesday.
Seoul said the North was using its investment "to fund its nuclear and missile development".
Kaesong is the last remaining point of co-operation between the two Koreas and a vital source of cash for the North.