You have it absolutely correct. A few points, however-the treaties and conventions you mention were incorporated into the UN Charter, which when ratified by the US became the Supreme Law of the Land (US) by way of Article 6 section 2. Never having been abrogated that part of the UN Charter is the international Law as it relates to Israel (If the Persians can change the name of their land to Iran, then the REAL Palestinians (the jews of Mandatory Palestine ( the British coined the name-Read your history not Arab/Arafat propaganda}) can change the name of theirs to Israel. Under the terms of the Treaty and its iterations, Jew have the right to settle anywhere between the Mediterranean Sea and Jordon River. Therefore, these settlements are not illegal under international law. They may not be desirable, but they are legal. Furthermore, the Treaty prohibits transfer of any of the land from the mandate. Now if the Israelis wish to give up their land, that is their right, not Obama's.
U.S. confirms ISIS computer expert killed in air strike (Reuters)
from the article: PA holds olive branch in one hand, stone in the other