Push-button

It will be a push-button war of nuclear missiles.

This push-button phone turned out to be useful in its way.

Some people speculate whether the next big war will be a "slow war" with troop deployment or a mechanical push-button "fast war." Some people note that at the "micro level," there is aggression, so at the "macro level," there will be also.

push-button warfare

a push-button automatic [transmission]

The push-button, entrance-exit signalling console incorporated in the operating floor of the yard control tower governs entry to and egress from the yard, [...]

The communicating doors of adjoining vehicles are opened simultaneously by pressing a large push-button located a suitable height for a man loaded with mailbags to contact it with his shoulder; after a time-lag of seven seconds the doors close automatically.

The cab equipment of the automatic control system is illustrated. It consists of a rotary switch graduated from 0 to 120 km.p.h. at 5 km.p.h. intervals, and four push-buttons.