It is an extraordinary sight. The demilitarised zone that has separated North and South Korea since 1953, when the Korean war ended in an armistice, is one of the world's most heavily-fortified borders. Around 1m soldiers are deployed either side of the 4km (2.5-mile) wide dmz, but within it wildlife, including rare flowers and birds, flourishes undisturbed. From here the gulf between the Koreas may seem impossible to bridge. Nevertheless, the first steps towards reconciliation continued this week.
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