Protesters have marched on the British Embassy in Buenos Aires, demanding Argentina end all diplomatic ties with London, as a war of words over the Falkland Islands intensifies. <br /><br />Earlier this week David Cameron, the UK prime minister, accused the country of "colonialism" in its claim to what Argentines call "Las Malvinas".<br /><br />Al Jazeera's Simon McGregor-Wood reports.
