서울경찰청, 美대사관저 경비 강화... 검찰, 대사관 침입 학생 17명 중 7명 구속영창 청구<br /><br />South Korea is beefing up security at the U.S. ambassador's residence in Seoul after a break-in Friday by college protesters.<br />The Seoul Metropolitan Police Agency says it's dispatching 80 more officers to the area.<br />It's also setting up a hotline with the U.S. embassy... and will enable officers to be deployed more quickly in emergencies.<br />The police have requested arrest warrants for 7 of the 17 students who used ladders Friday to climb over the wall of the ambassador's residence.<br />They were protesting Washington's demand that Seoul pay more for the cost of stationing U.S. troops in South Korea. <br />