How long have the Jews been dispersed and are they still Jews?
The nation of Israel has been in dispersion of one sort or another for almost 2,700 years, scattered among all nations, yet they are still Jews. When God brings them back to the land, they remain Jews, though unable to name their tribe; God knows.
Les explains that Israel has been in a dispersion of one sort or another for almost 2,700 years, scattered among all the nations of the world, yet they are still Jews. He notes that even when God brings them back to the land, whether out of Russia or wherever, they are Jews. Although they cannot tell which tribe they came from, God knows. This fits the setting shortly after the seven years of tribulation begin, when God's two witnesses preach to the nation of Israel and 144,000 Jews are sealed from all the tribes of the children of Israel—not just two tribes, but all represented.