That lead has a few years of consensual work in it, which you ignore. Secondly, the text you changed refers to Palestine as a 'name which has been used'. This is there because Palestine has had several distinct denotations over time. By writing in substitution, 'Palestine is a region between the Mediterranean Sea and the Jordan River,' you are creating confusionand asserting, grammatically, a falsehood. The present tense is used, and yet at present there is no 'Palestine' in that location. There is Israel and the West Bank. Please confer with others before making this kind of confusing edit.