North Korea warned Sunday that the upcoming US-South Korea military exercises are "reckless behavior driving the situation into the uncontrollable phase of a nuclear war."

Pyongyang also declared that its army can target the United States anytime, and neither Guam, Hawaii nor the US mainland can "dodge the merciless strike."
The messages in Rodong Sinmun, the official government newspaper, come a day before the US starts the Ulchi Freedom Guardian military exercises with South Korea.

Tensions between the US and North Korea have grown in recent weeks.
Just last week, Pyongyang said it had finalized a plan to fire four missiles toward the US territory of Guam. State media reported that leader Kim Jong Un would assess the US' next move before giving launch orders.
Kim would "watch a little more the foolish and stupid conduct of the Yankees," a North Korean statement said last week