British Prime Minister Boris Johnson plans to visit Japan in mid-February for talks with Prime Minister Fumio Kishida, sources familiar with the matter said Saturday.

During Johnson's planned trip on Feb. 15 and 16, the two leaders are likely to discuss ways to enhance security cooperation in the Indo-Pacific, where China has become increasingly assertive in its territorial claims in the East and South China seas, the sources said.

Johnson and Kishida would also be expected to discuss the Ukraine crisis.