Insider's logic, not reacting is "reactive":
Current and former Obama officials say the president’s reluctance to respond more assertively against Putin is signaling U.S. weakness and indecision. “We’re just so reactive,” said one senior administration official. “There’s just this tendency to wait” and see what steps other actors take.Yes, I realize this is just a quote from an anonymous source quoted by Tiger Beat on the Potomac, but I think it encapsulates an attitude that is widely held. Somehow "doing something" (i.e. usually killing some people somewhere) is better than non-intervention, even though the U.S.'s record for intervention over the past half century is pretty disastrous.