There are strikes in Aikido, but they are never more than supplementary to a particular technique: no technique in Aikido ever has striking one’s opponent as its aim. That said, there are numerous counters to striking attacks (punches, thrusts, roundhouses, etc.) delivered by others. Kicks are not often used in Aikido, and although specific responses exist, they are not often practiced. Most of the strikes and kicks have been toned down, but they are still there. Aikido, while it can be studied simply as an array of effective techniques, should not be thought of as limited in this way. Even if you’ve never studied a specific response to being attacked by a three-legged, five-armed alien, Aikido should enable you to defend yourself even in novel situations.