So, it it good to intervene in foreign countries?

...Like Libya, Syria, etc?

I'm in no position to (mis)judge, since it was largely thanks to the efforts of the international community that the apartheid regime was finally brought down in my country. And I couldn't express my gratitude enough to the people around the world. I fear our guys would've never succeeded on their own.

There are causes that are just and worth fighting for, and intervening for. And then, there are just Realpolitik and economic and geopolitical interests. The trick is to distinguish which of the two ends where and gives way to the other.