North Korean leadership is currently considering all possible countermeasures to President Donald Trump’s provocative weekend remarks, according to a statement from the nation’s foreign minister.

The official called Trump’s comments, in which the president questioned North Korea's longevity, a clear declaration of war and said the international community should remember that the United States started the battle.

North Korea considers itself justified in reacting defensively, including through the take down of American bombers flying even outside North Korean airspace.

"The question of who won't be around much longer will be answered then," Ri Yong-ho said in his statement.

Even as state relations deteriorated, defense stocks were slow to react and even continued on downward trends, betraying trader skepticism that the rhetorical feud will move beyond United Nations platforms and Twitter Inc (NYSE:TWTR).

Meanwhile, SPDR Gold Trust (ETF) (NYSE:GLD) immediately spiked 1 percent, and SPDR S&P 500 ETF Trust (NYSE:SPY) saw a marginal drop.