Always consider four possibilities when someone claims to speak for God:
  1. They are sincere, but deluded or insane.
  2. They are insincere and hucksters.
  3. They are insincere and attempting to discredit God.
  4. They are correct.

The first three are by far the most likely. The fourth however has occasionally been problematic. Not in this case I think.

As a side note, I don't get the impression the God is angry about wars and hungry children per se. I have the distinct feeling the God is angry about the things inside people that make war possible, and allow children to go hungry.

God is highly concerned with root causes. (Am I speaking for God?)