Answer:
"People without their own land are people with no land"
Explanation:
You can take the main idea from this sentence, and develop your thesis on this topic sentence.
The meaning of this sentence in "Syrian Refugees" situation is that, they have been displaced from their own land, and now no country is willing to give them land/resources, so they have no land.
This sentence will get much attention because of the well-known phrase "A land without a people for a people without a land"