Knowing that the Abu Sayyaf are possibly pledged over with support from ISIS and Hamas, the more missions must continue. I do sound crazy to the ears of natural man for saying missions must continue in Mindanao but it must go on. Christians are commanded to evangelize and Muslims are no exception. Everyone who dies without Christ is going to Hell. Every dead Muslim whether they are terrorist or not is going to Hell. Muslims only believe that Jesus was a prophet, not the Son of God.
One may say, "Come on, what about morally good Muslims?" Now that is a good question. Isaiah 64:6 says that all the righteousness of man is just filthy rags before God who is holy. James 2:10-11 warns that it only takes one sin for a man to be discredited. Romans 3:10-23 declare that man is helpless before God. Ephesians 2:8-9 says that salvation is by faith not by works so no man can boast. Christians do good works because God saved them, it's gratitude unlike Islam which is a religion of nothing but death and fear. Remember even ISIS, Hamas and Abu Sayyaf members are mission field, not targets to exterminate.
Evangelism will continue no matter what. Here's what- the more you persecute Christianity the more it will grow instead. Islam is a system of death where you can't even be sure of salvation. On the other hand, Christianity is a real relationship with Jesus Christ, one can be sure of salvation (1 John 5:13). Islam offers no hope, Christianity offers hope. Muhammad is still in the grave and in Hell, Jesus has conquered death with the proof of the empty tomb.