SEOUL - North Korea has been floating anti-Seoul leaflets into South Korea "on almost a daily basis," the South claimed Monday – just days after Pyongyang referred to its neighbor's own psychological warfare tactics as "odd." The North reportedly began its leaflet campaign last week in response to high-decibel propaganda broadcasts from the southern side of the inter-Korean border. A spokesperson for South Korea's defense ministry told reporters that around a million leaflets had been scattered so far – with some reaching the Seoul area dozens of kilometers away. While Seoul's broadcasts have been critical of North Korean leader Kim Jong-un, the North's propaganda has in turn targeted South Korean President Park Geun-hye. The ongoing tit for tat exchange follows Pyongyang's announcement earlier this month that North Korea had successfully carried out its first hydrogen bomb test. In the past, the North has considered even ideological attacks to be an act of war – such is the value placed on the cult of personality surrounding the reclusive state's Kim dynasty, now in its third generation. As the world awaits another United Nations Security Council resolution and more sanctions against North Korea for again defying denuclearization demands, Seoul has been braced for a further provocation. South Korea's military fired warning shots after a drone encroached across the border last week, but otherwise the two sides have been limited to a battle of words this month. They have maintained an uneasy truce since the 1950-53 Korean War, having never agreed a peace treaty.