North Korea is gearing up to send propaganda leaflets over its southern border, denouncing North Korean defectors and South Korea, its state media said yesterday, the latest retaliation for leaflets from the South as bilateral tensions rise. Enraged North Korean people across the country "are actively pushing forward with the preparations for launching a large-scale distribution of leaflets," which are piled as high as a mountain, said state news agency KCNA. "Every action should be met with proper reaction and only when one experiences it oneself, one can feel how offending it is," KCNA said. North Korea has blamed North Korean defectors for launching leaflets across the border and threatened military action. On Tuesday, Pyongyang blew up an inter-Korean liaison office to show its displeasure against the defectors and South Korea for not stopping them launching leaflets.