"Here you have a situation where the president is just clearly just making it up as he goes along and trying some bellicose language because he thinks that will work", Soderberg said in an interview with "Power Lunch".
Trump in April made similar comments about USA relations with North Korea, and claimed that he hoped "things work out well" with North Korea.
A number of Trump administration officials, including the president himself, have publicly commented on the recent threats made by North Korea, including a proposed strike on the waters off Guam, a US territory in the western Pacific. On Thursday, Trump said his previous statement may not have been tough enough.
Trump's warning came after the North Korea threatened to fire ballistic missiles over Japan towards the US Pacific island of Guam. "That's not who we are".
The US is ready along with its allies to apply the full range of diplomatic, economic and military measures to stop the North Korean nuclear menace, President Donald Trump told his French counterpart Emmanuel Macron on Satruday. The ignorance of every single public figure regarding these facts is more risky than anything President Tweety may say. For one, they didn't want to put somebody in a corner.
The U.N. Security Council just unanimously passed new stronger sanctions against North Korea's nuclear program. But Mattis said Thursday that the American effort was "diplomatically led".