.N. peacekeepers from Ghana hold a U.N. flag as they patrol a street in the village of Ramieh, on the border with Israel, background, southern Lebanon in this May 12, 2006. They first landed in the Middle East in 1956, with lofty goals and helmets painted blue. But over the next half-century, dug in between Arab and Jew, U.N. peacekeepers often found little peace to keep.