To assume that God was angry about the destruction of Jerusalem denies his sovereignty. The prophets under the inspiration of God foretold of the destruction of Jerusalem. Christ, God himself, even stated that it would occur during the current generation. The destruction of Jerusalem was in God’s plan all along, as was the destruction of Pompeii and Herculaneum, not the result of a temper tantrum over the loss of Jerusalem.
God frequently used foreign nations to punish Israel, then at a time of his choosing punished the foreign nations.