"Gen. Dunford just arrived in Osan Air Base to meet with US Forces Korea leadership and explore the Camp Humphreys area with his team on board 2 UH-60 Black Hawks", a short statement on the Joint Staff Facebook page states.
U.S. Defense Secretary Jim Mattis and Secretary of State Rex Tillerson said in a commentary in the Wall Street Journal the United States was adopting a policy of "strategic accountability" towards North Korea, and was applying diplomatic and economic pressure "to achieve the complete, verifiable and irreversible denuclearization of the Korean Peninsula and a dismantling of the regime's ballistic-missile programs".
Guterres also conceded the role of North Korea in precipitating the crisis, saying that it started with Pyongyang building up its nuclear and missile programmes.
"Dialogue between South and North Korea should be resumed, but we don't need to hurry up on that", he said.
Pyongyang carried out its first successful tests of an intercontinental ballistic missile (ICBM) last month, apparently bringing much of the USA mainland within its reach.
"Peace is in South Korea's national interest".
Impoverished North Korea hates the drills in part because it must frequently respond with its own expensive displays of military might. Some 50,000 South Korean soldiers and about 25,000 USA troops participated previous year over two weeks in the so-called Ulchi Freedom Guardian exercises.
There's media speculation that the allies might try to keep this year's drills low-key by not dispatching long-range bombers and other US strategic assets to the region.
Woo went on to say that the call for redeployment is a "claim that would benefit the North". "What I would like to see is Kim Jong Un to commit to ceasing the development of nuclear weapons and ceasing the testing of ballistic missiles", Dunford said.
He also said that the two Koreas should hold a dialogue on de-nuclearising their peninsula. On one occasion he said that Washington has military solutions "locked and loaded" for North Korea.
He backed that up on Friday by saying that the U.S. was "locked and loaded" to take on the rogue state and that Kim would "regret it fast" if he attacked Guam or any of America's allies.
It would be only South Korea that can decide to take military actions on the peninsula, said Moon who emphasized that any party cannot decide to take military actions on the peninsula without the consent of South Korea. "We are closely monitoring every move by the United States".
"I will prevent war at all cost", President Moon Jae-in said, as cited by AFP. Following the statement, Pyongyang said it is considering an attack near the Pacific island of Guam, where several U.S. military bases are located.
"If they shoot at the United States, I'm assuming they hit the United States - if they do that, then it's "game on", he said.
A notice put out by Guam's Joint Information Centre on Saturday warned residents how to prepare "for an imminent missile threat".