1-Establish high-quality (secular) Islamic universities all around the Muslim world and tell students about apologetics , theology , history of Islam etc . By secular , I mean that Shi'a , Sunni , Sufi etc etc all should be welcomed. NO sectarianism. 2- Develop Satellite Islamic channels that appeal to Muslim audience. Discuss Christianity's "attacks" against Islam and provide answers to those attacks. Make general Muslim population aware of Islamic apologetics and tell them how Christian apologists attack Islam etc 3- Train D'aees in institutions and target people that are easily "convertable" ...e.g Chinese villagers that are hungry for spirituality , pagan Africans that want organized religion (Christianity already did that and took lead on Islam in both cases...thanks to great Muslims like you) ... etc etc ALL the things I mentioned are practical and Christians have been doing this for decades now and now these things are showing "results" ... whereas Muslims are busy in arguing "Does Satan pee in your mouth when you slumber" or "Should Hijab be made compulsory on all women" etc etc ... See how sad the situation is? When Hazrat Umar (RA) did mass conversions , they didn't ask people to get circumcized or instantly quit drinking etc..first they brought them into Islam and then those people got educated about Islam step by step slowly..Muslims should do the SAME! All the "supposed actions" I proposed require funding..any of your great "Islamic brother" in Arab ruling families can fund this with very little effort (considering how much money they've got) ... The are soooooooooo many other "actions" that one can do but alas! who cares in Muslim world? They are busy in "Shi'a bashing" ...