There was no 'international outrage'? Why should anyone be outraged by freeing a country from the grips of a dictator who was indicted on charges of racketeering, drug smuggling, and money laundering?
If you look at the UN Security Council vote to condemn the US invasion, only the US, Britain, France, and Canada voted against condemnation. Finland abstained. Of course the USSR, China, and Yugoslavia, being Communist nations, voted against the US. It was after all still the Cold War. But every other country also voted to condemn the US invasion. Some of these Third World countries were military dictatorships so of course they voted to support Noriega. But some of those countries were reasonably democratic and one might expect at least one or two to support the US, but it didn't happen.