U.S. State Department spokesman Mark Toner said North Korea had become a "front and center front-burner issue" and Tillerson would be "very vocal" on Friday about his concerns that countries were not doing enough to implement sanctions.
In a show of force, Trump has dispatched to waters near the Korean Peninsula what he's called an "armada" of ships, including an aircraft carrier.
The port call by the USS Michigan came as a USA aircraft carrier strike group steamed towards Korean waters and as top envoys for North Korea policy from South Korea, Japan and the United States met in Tokyo.
"China has a very, very important role to play" to convince North Korea to give up its nuclear ambition, Joseph Yun, the USA special representative for North Korea policy, told reporters in Tokyo.
Meanwhile, Seoul's Unification Ministry said that North Korea does not seem to have any major events planned for the anniversary despite its war rhetoric.
The Trump administration has said all options, including a military strike, are on the table.
North Korea's drills coincided with military exercises held by US and South Korean navies in the Yellow Sea, off the western coast of the Korean Peninsula.
ASEAN welcomes progress on framework for South China Sea code of conduct
What would be the objective also of discussing it is you can not do anything", Duterte told reporters Thursday. He also noted that the illegal drugs trade is an worldwide empire whose tentacles are wide and far-reaching.
The South's trumpeting of progress on setting up the Terminal High-Altitude Area Defense system, or THAAD, comes as high-powered USA military assets converge on the Korean Peninsula and as a combative North Korea signals possible nuclear and missile testing. This was taken as meaning that Beijing would condone Washington's pre-emptive strike as a result of Pyongyang's unwavering pursuit of its nuclear and missile programs.
The Soviet Union controlled the territory in the north and the Americans controlled the south.
Experts fear Pyongyang could be planning more tests - it has marked some key anniversaries in the past with nuclear tests or missile launches. Chief nuclear negotiators from left to right, Joseph Yun, U.S. special representative for North Korea policy, Kenji Kanasugi, director general of the Japanese Foreign Ministry's Asian and Oceanian Affairs Bureau, and. Air China is offering flights between Beijing and North Korea again after a brief halt.
Japan's early-warning systems, more regularly used to alert against earthquakes and tsunami threats, will announce an impending missile strike via loudspeakers, mobile phone messages, and TV and radio reports.
The growing danger has alarmed observers, analysts and lawmakers alike, in part because all attempts by former administrations to stop or slow the North Korean program through sanctions, aid, talks and attempts to draw Pyongyang into the world community have failed.
The reasons for the detention of Tony Kim, who taught accounting at the Pyongyang University of Science and Technology, were not immediately clear.
What is hopeful though is that North Korea's "restraint" this time could pave the way for us to expect the ongoing crisis to be resolved through negotiations. It also launched a long-range rocket previous year that delivered a satellite into orbit, which Washington, Seoul and others saw as a banned test of missile technology.