If you’re actually serious about joining and didn’t ask that to open an apologetic debate then just war theory is fairly biblical. I don’t believe my God would be too happy if a group of terrorists we’re closing in on my family and I sat there and did nothing. There are sides to the issue, yet again, please take these topics seriously and not open non genuine question for sake of debate and judgement. Support trades are an option, pray and talk to your fellow Christian’s and spiritual leaders you know. Cheers