North Korean leaders view nuclear arms as critical to regime survival, the report said.
The launch follows a series of Pyongyang's weapons tests, including the launch of a hypersonic missile last month.
Japan media say he could be prioritising the elections due to take place later this month.
Rejecting Chinese military coercion, Ms Tsai said the island has strengthened ties with U.S., Japan and Australia.
Socialism with Chinese characteristics has proven to be the only correct path to realise national rejuvenation, the Chinese President said.
President Moon Jae-in held no summit with Kishida’s predecessor, Yoshihide Suga, during his one-year tenure.
It was the highest number of drills since 2014.
The first sortie of 52 planes included 34 J-16 fighter jets and 12 H-6 bombers, among other aircraft, Taiwan said.
The missiles probably crashed and failed to reach their target, sources say.