Japanese Prime Minister Ishiba Shigeru has told members of the Self-Defense Forces that he will work to fundamentally reinforce the country's defense capabilities in light of the severe security environment.

Ishiba addressed about 600 SDF personnel on Saturday at a review ceremony at the Ground Self-Defense Force's Asaka training ground in Saitama Prefecture, near Tokyo.

He referred to the intrusions by Chinese and Russian military aircraft into Japan's airspace earlier this year. He said they are serious violations of Japan's sovereignty and are totally unacceptable.

With North Korea's repeated ballistic missile launches also in mind, Ishiba said Japan is facing the toughest and most complex security environment in the postwar era. He said he will strengthen Japan's diplomacy and defense capabilities in a balanced manner.

The prime minister also spoke about his telephone conversation with US President-elect Donald Trump and said the two agreed to work together to raise the Japan-US alliance to new heights.

Ishiba pledged efforts to boost the country's defense capabilities, such as deploying standoff missiles that can strike targets from outside enemy range. He also indicated he would work to improve the working conditions of SDF personnel.

Ishiba said, "Protecting Japan's independence and peace is the pillar of our efforts," adding that he is determined to take the lead in protecting the people.