Quotes from U.S. Republican presidential debate

(Reuters) - The U.S. Republican presidential contenders met on Tuesday for their 11th debate in the race for the nomination to challenge President Barack Obama in 2012. The debate centred on national security and foreign policy. Here are some of their quotes: MITT ROMNEY, FORMER MASSACHUSETTS GOVERNOR On U.S. aid to Pakistan "We need to bring Pakistan into the 21st century, or the 20th century ...