Oh, the amazing patience of God with this sinful world! How wondrous is His love! He has sent the Son of His love to our world to die for us and to save us; and because men cannot and will not see this, God permits and allows such things as war to chastise and to punish us, to teach us and to convict us of our sins, and above all to call us to repentance and acceptance of His gracious offer. The vital question for us therefore is not to ask, “Why does God allow war?” The question for us is to make sure that we are learning the lesson and repenting before God for the sin in our own hearts and in the entire human race that leads to such results. May God grant us understanding and the true spirit of repentance, for His name’s sake."
Martyn Lloyd-Jones, Walking with God Day by Day: 365 Daily Devotional Selections