welcome,
The love of the Lord is wide and so deep. Your question is very sensitive in that you need to understand. God is God, He does what pleases Him at all times, you ask doesn't he please by healing people? surely he is. Remember righteousness exalt the nation, if any nation does not seek God and His Kingdom. That nation is surely to abound in sin.
Remember Abraham and Sodoma Gomorah story, if there is no one seeking God for the righteousness of the city or country said, there comes a challenge. Remember as God is so powerful and mighty he doesn't force himself people have to ask him to come in.
So God does care for Iraq, Aids infected and affected nations, but how they in need of the master's intervention prolongs the situation. it's not that you are self or some what, the fact you asked shows that care. So in God's time the will be answer not what people keep on telling about these stories.