I can understand why he would say this, can't be looking like he endorses war. However what does he think we should do? Sometimes war is the only way. You can no more change ISIS evil ways any other way than you could have people like Hitler.War is not the way to address injustice, Pope Francis said Sunday, in comments that appeared to distance himself further from any faith-based justification for US airstrikes in Iraq.
Pope walks back Vatican’s endorsement of Iraq airstrikes: War no way to address injustice
Maybe I'm wrong but I don't think most Christians are against all wars and never have been. I think sometimes even Christians see war as necessary.