What is the difference between a strength, a competitive advantage, and a sustainable competitive advantage?

1. What is the difference between a strength, a competitive advantage, and a sustainable competitive advantage?
2. What makes an ability (or set of abilities) a core competency?

3. Why is it necessary to perform an external and internal analysis before the firm
can identify its true core competencies?
4. Pick a company you are familiar with. Can you identify some of its core

competencies?

5. How is the idea of
strategic intent different from models of strategy that emphasize achieving a fit between the firm’s strategies and its current strengths, weaknesses, opportunities, and threats (SWOT)?
6. Can a strategic intent be too ambitious?