Singapore, Dec. 4 -- Leaders of the North Atlantic Treaty Organisation (Nato), the United States-led military alliance in Europe, are meeting in London today for a summit to mark the 70th anniversary of their organisation's foundation.

Britain is eager to play up the festive spirit. Flags of Nato's 29 member nations now line the roads to Buckingham Palace, and Queen Elizabeth II has thrown a glittering reception followed by a sumptuous dinner for Nato members' heads of state and government.

Despite the elaborate preparations, the British hosts still fear that the birthday bash could easily turn into a public relations disaster, with Nato members quarrelling not only about what the military bloc should do, but about the very purpose of t...