God, in His mercy, can also take the tragedies of life and use them. God can take the most evil deed and work in spite of it. The Apostle Paul made this point in Romans 8:28: "And we know that all things work together for good to those who love God, to those who are the called according to His purpose." Paul includes what we perceive as "good things," as well as the bad things.
It's hard for us to understand how a bad thing can ultimately work together for good. There is nothing good about what happened to the 150,000 people who died in Southeast Asia. It was tragic beyond belief. But God, in His infinite wisdom and love, somehow takes all the events of our lives, both good and bad, and blends them together ultimately for good. The good He intends, that is.
Already, Christian organizations are mobilizing to send much needed help and resources to the hurting people of Southeast Asia. People will receive much needed physical and spiritual help. God will work things together for good.