I do think Western Christianity outside the USA has gone a little soft in recent years. We forget that we made Christian nations by force in many areas of the world:
Charlemagne in East Europe
Roman Constantine to Theodosius/Justinian around the Med
The Spanish in Latin America and indeed in Iberia against the Muslims
The Austrians against the Ottomans
The Russians across Asia
The British across their empire and in establishing the USA, Australia, Canada, New Zealand as Christian nations.
People are converted by love and the grace and mercy of God. But the kinds of people who get in the way of that conversion have historically been eliminated or moved out of the way by force. It is naive to pretend that there are not coordinated efforts to eliminate Christians around the world, and the best way to counter these is often by force. Also, there is a massive quantitative difference between the church of the East and West precisely because the Eastern church never really had the protection of the state and was periodically massacred by various diverse forms of evil, - Islam, Communism, Pagan, etc.
The ideal is the rule of the King of Kings. In a fallen world, Freedom of religion is probably the best we can hope for, but failing that, flawed Christian theocracies are the next best option