WASHINGTON (Kyodo) -- Japanese Defense Minister Takeshi Iwaya and U.S. Acting Defense Secretary Patrick Shanahan agreed Wednesday to cooperate in new domains of warfare like outer space and cyberspace in a veiled response to China's quest for military supremacy in such areas.
Iwaya and Shanahan also affirmed full enforcement of U.N. sanctions on North Korea as a way of compelling it to abandon nuclear weapons and ballistic missiles, the Japanese minister told reporters after their meeting at the Pentagon.
They agreed that deterrence by the two countries plus South Korea is "indispensable" for the security of the region despite ties between Tokyo and Seoul souring over an alleged radar lock-on incident involving a South Korean warship and a Japanese plane.
It was the first meeting between the two ministers since Shanahan took the post on Jan. 1 following the resignation of Defense Secretary Jim Mattis.
It also came a month after Japanese Prime Minister Shinzo Abe's Cabinet adopted a new 10-year defense policy and a new five-year midterm defense buildup program, both of which are intended to further strengthen the Japan-U.S. alliance.
In the meeting, Shanahan "acknowledged the key role Japan's new National Defense Program Guidelines and Mid-Term Defense Program will play in strengthening the alliance," the Pentagon said in a statement.
"The leaders reaffirmed the long-standing defense relationship as the cornerstone of regional security policy," it said.
Iwaya said he and Shanahan underscored their opposition to attempts to alter the status quo in the East and South China seas, and pledged to cooperate in promoting the rule of law and the freedom of navigation there.
The move was a veiled criticism against China's militarization of outposts in disputed areas of the South China Sea and Beijing's attempts to undermine Japan's administration of the Senkaku Islands in the East China Sea.
Earlier Wednesday, Iwaya sought close ties between the U.S. Space Command, which President Donald Trump has instructed the Pentagon to set up, and Japan's envisaged "Space Domain Mission Unit," an entity to be established by fiscal 2022 in line with the latest defense guidelines.
In a speech in Washington, Iwaya also pushed for deeper coordination in the cyberspace domain with the U.S. Cyber Command, as he outlined a Japanese plan to set up a "Cyber Defense Unit" under the command of the defense minister by fiscal 2023.
"For space, we will monitor situations in space all the time and develop capabilities to disrupt an opponent's command-and-control and information communications," he said, in reference to the proposed space unit.
The envisaged cyber unit "will drastically enhance cyber defense capabilities, including those to disrupt an opponent's use of cyberspace in an armed attack against Japan," Iwaya told the Center for Strategic and International Studies, a Washington think tank.
Citing threats posed by North Korea, Iwaya urged firmer operational cooperation with the U.S. military and said the planned introduction of the land-based Aegis Ashore missile system in Japan will lead to a "tremendous increase" in its ballistic missile defense capability.
"We cannot overlook the fact that North Korea's nuclear and missile capability continues to be a serious and imminent threat to our security," he said. "This fact makes it even more important for Japan-U.S. cooperation to be rock-solid."
With the Japan-U.S. alliance as a cornerstone, the minister pledged to advance the vision of a free and open Indo-Pacific -- a concept seen as designed to counter China's rising clout and assertiveness in the region -- in partnership with Australia, India and Southeast Asian countries.
"In order to establish the desired security environment for the Japan-U.S. alliance, it is essential to strengthen the presence of Japan and the United States in the Indo-Pacific region and we will continue our efforts to that end," he said.
Dismissing local opposition to landfill work that started last month in Okinawa Prefecture for the construction of a replacement facility for U.S. Marine Corps Air Station Futenma, Iwaya said the Japanese government will "steadily proceed with" construction work so as to achieve an early return of the base to Japan.
"We will steadily proceed with projects for the realignment of U.S. forces in Japan and will mitigate the impact on local communities, while sustaining the deterrence offered by the U.S. forces," he said.
He was referring to a Japan-U.S. plan to relocate Futenma from a crowded residential area in Ginowan to the less-populated coastal district of Henoko in Nago.