Israeli settlements are built up Jewish communities built on Palestinian land in the West Bank, East Jerusalem, and in the Golan Heights. Israel started building settlements in 1967, after it illegally occupied Gaza and the West Bank.
The settlements are built on Palestinian land and violate Palestinian human rights, including the right to property, equality, a decent standard of living and freedom of movement. Israel’s settlements are a violation of the Fourth Geneva Convention and therefore illegal under international law. Furthermore, the settlements deny Palestinians the right to self-determination, and also make it difficult for Palestinians to establish a viable independent state.
Israeli settlements explained: https://www.youtube.com/watch?v=1sib5HbdEV4