In 1948 the Arabs also declared their borders as being what is Israel pre 1967 and went to war to claim it. Whether the territory within these borders if the Arabs won would have become Jordan, Egypt, Syria, Iraq, or Lebanon is anyone's guess....but it surely would not have been PALESTINE. I suppose the surrounding Arab countries would have fought each other until some victor declared what is now Israel as their own.
Key U.S. House Democrat cites troublesome issues in Iran nuclear deal (Reuters)
from the article: Israeli troops shoot dead Palestinian boy in West Bank