Not "spreading Islam" but telling people about Islam.<quoted text>
Spreading Islam by whatever means implies also by war?
Yes also by war if some power is "Stopping preaching of Islam" using force or planning mischief against Islamic state.
But those glorious days are past, now muslims are either defending their countries from aggression or fighting between themselves.
I am talking from Islamic point of view about Jihad.
It was Muslims duty to be "policemen" in the world enforcing Justice, Equity and seeing no one oppresses any one.