There are many Israeli settlements in the Palestinian territory of the West Bank. They are under Israel’s control. And are considered illegal by the United Nation and many other countries. The Palestinian territories in the West Bank are administered by Palestinian Authorities under the control of Fatah, A political party. On the other hand, the Gaza Strip is controlled independently by Hamas. There has been a separate conflict between Fatah and Hamas historically.
Hamas is an extremist Palestinian organisation which is considered a terrorist organisation by most countries. Canada, the European Union, Israel, Japan, Australia, the USA, and the UK designate Hamas as a terrorist organisation.
On the other hand, it is not considered a terrorist organization by Brazil, China, Egypt, Iran, Norway, Qatar, Russia, Syria, and Turkey.