TT: The military tracked Chinese warplanes and responded as they encroached on Taiwan’s air defense identification zone (ADIZ) twice in the past four days, the Ministry of National Defense said yesterday.

The Japanese Ministry of Defense said that it also identified two Y-9 aircraft — one configured for reconnaissance and the other for electronic warfare — to Taiwan’s east.

I'm not sure what 'electronic warfare' means - a plane that can disrupt electronic signals?

Anyway, along with cyber-warfare, this will be a big part of any future wars - maybe the main part.