Japanese and Nato officials agreed Tuesday to step up military cooperation and joint exercises as they shared concerns that Russia’s invasion of Ukraine is causing a deterioration of the security environment in Europe and Asia. Japanese Defence Minister Nobuo Kishi said after meeting with NatoMilitary Committee chief Rob Bauer that Japan hopes to strengthen its ties with European countries and welcomes Nato’s expanded involvement in the Indo-Pacific region. “The security of Europe and Asia are closely intertwined, especially now with the international community facing serious challenges,” Kishi said. Bauer’s visit in Tokyo comes as Japan’s Maritime Self-Defence Force is taking part in Nato naval exercises in the Mediterranean Sea. Japan has been increasing its military capabilities and cooperation with Europe, in addition to its alliance with the United States and partnerships with other countries in the Indo-Pacific region and beyond, in the face of China’s rise. Fumio Kishida plans to become first Japanese PM to attend a Nato summit On Tuesday, Japanese and US fighter jets conducted joint flight drills over the Sea of Japan “amid an increasingly severe security environment, such as North Korea’s repeated ballistic missile launches,” Japan’s Defence Ministry announced. The joint exercise, which involved four Japanese F-15 fighter jets and two US F-16s, was aimed at showing the two militaries’ “strong commitment and close cooperation in responding to any emergency, while further reinforcing the strong alliance,” it said. Prime Minister Fumio Kishida has been invited to the Nato summit later this month, and is reportedly considering attending the meeting, which would make him the first Japanese leader to do so. In May, Japanese Military Chief of Staff Koji Yamazaki joined a meeting of Nato counterparts in Belgium for the first time. Bauer praised their increased engagement in tackling “shared security challenges.” Japan quickly joined the United States and Europe in imposing sanctions against Russia and providing support for Ukraine, saying the crisis affects not only Europe but also could further embolden China to increase its assertiveness in the Indo-Pacific.