Secretary of Defense James Mattis on Wednesday took a less extreme stance on North Korea than President Donald Trump, who issued a number of zig-zagging, escalating statements after the nation fired a missile over Japan earlier this week.

“We are never out of diplomatic solutions,” Mattis told pool reporters, as quoted by Reuters.

Mattis was scheduled to meet with South Korean Defense Minister Song Young-Moo at the Pentagon.

“We continue to work together, and the minister and I share a responsibility to provide for the protection of our nations, our populations, and our interests,” he said.

Trump on Wednesday morning complained on Twitter about negotiations with North Korea and declared, “Talking is not the answer!”

The U.S. has been talking to North Korea, and paying them extortion money, for 25 years. Talking is not the answer! — Donald J. Trump (@realDonaldTrump) August 30, 2017

His tweet was an escalation from a more measured statement the White House released Tuesday after North Korea fired a missile over Japan. Trump declared then that “all options are on the table.”