On or hand, Sanders, on a question about growing tension between United States and North Korea, said, "We have not declared war on North Korea, to be honest, it is absurd to say that." said.
Sanders also took issue with the suggestion that Pyongyang would have the right to shoot down U.S. planes near North Korean airspace.
Trump's remark at a campaign rally on Friday took up most of the oxygen at Monday's White House press briefing.
Trump administration rejects Pyongyang's assertion that war had been declared.
The Trump administration on Monday called it "absurd" to suggest that the USA had declared war against North Korea.
The North Korean foreign minister then told reporters that the president's words had been a declaration of war and that they had the right to shoot down American warplanes in global airspace.
"Given the fact that this comes from someone that is now holding the seat of the United States presidency", he continued, "this is clearly a declaration of war".
Sanders said it's "never appropriate" for a country to shoot down another nation's aircraft over global waters. We continue to seek the peaceful denuclearisation of the Korean peninsula.
The foreign minister opened his brief remarks in Korean by saying that over the last few days, the UN and the global community have clearly wished "that the war of words between the DPRK (North Korea) and the United States will not turn into real action". Sanders, who uses expression, said that list of Iran, Yemen, Libya, Somalia, Syria, North Korea, Chad and Venezuela was set according to se security controls criteria.