A South Korean activist stabs a pocket knife on a picture of North Korean leader Kim Jong-Un (L) during an anti-North Korea rally near the national assembly in Seoul on March 22, 2013. North Korea posted a new propaganda video on March 22, showing paratroopers descending on Seoul in an invasion scenario that envisages taking around 150,000 US residents in South Korea hostage. AFP PHOTO / JUNG YEON-JE