Where Is the True Nation of Israel

The little country known as Palestine made worldwide news in 1948when the Jews from around the world came home and settled in their original homeland. This new development changed the name of their new land holdings to "Israel" and removed the name Palestine, which was used by most countries for a very long time. The Jews had finally come home just as the bible had prophecied, but was this the true Nation of Israel returning to their homeland? Let's just say, partly true and partly false. The Jews are a part of the Nation of Israel, but only a small part. The Nation of Israel as God laid it out contained 12 tribes. And at the end of Solomon's reign, the Nation split into two parts; the Nation of Israel containing 10 tribes, and the Nation of Judah containing two tribes. The Jews or the Nation of Judah are indeed part of the Nation of Israel, but only a small part. Where is the rest of the Nation of Israel? Is it lost to the modern world or can we find it if we make a careful search?