Bloomberg: Queen Elizabeth II of the U.K. urged the United Nations to pursue efforts to tackle poverty, terrorism and climate change, calling the world body a "real force’ for promoting peace and delivering aid. "So much remains to be done,’ the 84-year-old queen said in her first speech to the UN’s General Assembly since 1957. "The challenge now is to continue to show this clear and convincing leadership while not losing sight of your ongoing work to secure the security, prosperity and dignity …