London Telegraph 
November 24, 2011
North Korea has threatened to turn Seoul’s presidential office into a “sea of fire,” one day after South Korea conducted large-scale military drills near a front-line island attacked by North Korea last year.
The exercises marked the first anniversary of North Korea’s artillery attack on the South Korean island of Yeonpyeong that killed two marines and two civilians.
The North’s military warned in a statement on Thursday that “a similar sea of fire” may engulf Seoul’s presidential Blue House if South Korean forces ever fire a single shot into North Korea’s territory. The warning was carried by North Korean state media.
Pyongyang blamed Seoul for provoking the attack last year, saying it struck after warning the South not to carry out live-fire drills in waters that both Koreas claim as their territory.