You can also visit the Company Doctor's web site. Tactics are a subset of strategies.
Strategies are long term, because they are broad-based business initiatives that win the entire war.
These initiatives yield results over many years. Tactics require you to focus on today. Strategies require you to focus on tomorrow. Your business strategy should be based upon your perception of how to best position your business to respond to the answers to those above three questions. Yet a strategy that exists only in your mind is not sufficient.