Japan and Vietnam share "the same destiny" and should boost defense cooperation for regional stability based on the rule of law, Defense Minister Nobuo Kishi said on Sunday, amid China's increasingly assertive maritime activity.
In a speech delivered in Hanoi, Kishi said Vietnam is an important partner for Japan and stressed the need for the countries to work together to address various regional security issues amid the present "harsh reality," according to the Defense Ministry.
The speech at the Vietnamese Defense Ministry came a day after the two countries signed a deal enabling exports of Japanese-made defense equipment and technology to the Southeast Asian country.
Vietnam, a key member of the Association of Southeast Asian Nations, is the 11th country to sign such an agreement with Japan, at a time when China is stepping up its territorial claims in parts of the East and South China seas.
Kishi, on his first overseas trip as defense minister, met with his Vietnamese counterpart Phan Van Giang on Saturday and the two reaffirmed the importance of freedom of navigation and overflight in the Indo-Pacific region, in an implicit reference to Beijing.
On Sunday, Kishi reiterated that the deal signifies a "new stage" in the defense partnership between Japan and Vietnam, which is engaged in territorial disputes with China over the Spratly and Paracel island groups in the South China Sea, with Beijing accused of militarizing outposts it has constructed.
Kishi voiced concern over a law in China that authorizes its coast guard to use weapons against foreign vessels considered by Beijing to be violating its sovereignty.
The legislation, which went into force in February, includes provisions deemed problematic in terms of conformity with international law, Kishi said, noting that the law is vague about both the areas of the sea where it can be applied and the authority related to the use of weapons.
Kishi also said the scope of the Japan-Vietnam partnership will be expanded into new areas, including cybersecurity and the handling of the coronavirus pandemic.
Prior to his speech, Kishi also met with Vietnamese President Nguyen Xuan Phuc and Prime Minister Pham Minh Chinh.
The Japanese ministry said separately on Sunday that a submarine suspected to be from China was spotted off a southern island.
The submerged vessel headed northwest off the eastern coast of Amami Oshima on Friday morning in the so-called contiguous zone, just outside Japan's territorial waters, and it moved west through the East China Sea on Sunday morning, the ministry said.
It also said that a Chinese guided missile destroyer was also located near the submarine.
It is the first time since June last year that Japan has publicly stated that a submarine believed to be Chinese was sailing in the area, according to the ministry.
During Kishi's visit, Chinese State Councilor and Foreign Minister Wang Yi was also in Hanoi for a two-day visit, holding talks with Vietnamese Deputy Prime Minister Pham Binh Minh on Friday.
"The two sides should cherish the hard-won peace and stability in the South China Sea, place the maritime issues at an appropriate position in bilateral relations … jointly caution and guard against the interference and instigation from forces outside the region," the Chinese Foreign Ministry quoted Wang as saying during the meeting.
The visits also came about two weeks after U.S. Vice President Kamala Harris' trip to Vietnam.
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