Current Affair: world leaders and protesters are gather in Hamburg for the G20 summit

Summary: North Korea's nuclear ambitions are set to cast a long shadow as world leaders gather in Hamburg for the G20 summit. German police have used water cannons and pepper spray to disperse protesters in the German city of Hamburg ahead of the G20 Summi... (一連兩天的二十國集團峰會(G20)今日將會德國漢堡揭幕，多國領袖均關注北韓核威脅問題；另外，會議舉行前，據報有超過十萬人齊集漢堡示威，並同警方引發嚴重衝突。詳情請聽梁焱剛及鄺美玲報導。)