WASHINGTON -- President Barack Obama is learning to be a strong president. Yes, he can. When Obama took office, it wasn’t clear whether he had any firm principles. This perspective grew when he seemed oblivious to the harsh reality that Republicans weren’t going to sign on to his health care plan, no matter what. Obama became the Great Compromiser when he watered down his original concepts in a vain effort to appease his opponents, even though they had zero interest in working with him. The president had a light-bulb moment, at least publicly, earlier this week when he was interviewed...