The State of Israel is named after Jacob, who's name was changed to Israel (Genesis 32:22-31).  What is Palestine?  Palestine was the new name given by the Roman emperor to Israel, after he put down the Bar Kokhba Rebellion in 132 AD.  He changed the name of Israel to "Philistinia" or "Palestine" as an ironic joke. Remember Goliath? He was a Philistine. Goliath was killed and later, the Bablyonians killed or assimilated all of the Philistines. The Philistines had been completely obliterated in 597 BC.  Thus "Palestine" is just another name for "Israel." The United Nations decided with 14 or so Islum countries, there ought to be one Jewish country, and it ought to be in the original location. So Israel, changed in name only to Palestine, had its name changed back to Israel, officially, in 1947.  The chant "Free Palestine" and the phrase "from the ocean to the river" mean to literally destroy Israel and kill each and every Jew.