U.N. Security Council envoys spoke of unimaginable suffering and urged an end to the war in the Gaza Strip on Monday as they visited the Egyptian side of the Rafah border crossing, the besieged Palestinian enclave's only entry point for aid. China's representative to the United Nations, Zhang Jun, asked by reporters if he had a message to nations which opposed a ceasefire in Gaza, said simply: "Enough is enough." A majority of U.N. member states support an immediate and lasting ceasefire between