The Most Rev Justin Welby has arrived at Canterbury Cathedral for his enthronement.
Prime Minister David Cameron, the Prince of Wales and the Duchess of Cornwall are among those watching as the Most Rev Welby becomes the Archbishop of Canterbury.
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"Africa is very important for the United States."
The incident happened at around 8pm local time on Thursday evening.
The Foreign Secretary said "good connections" were important, and suggested the Channel Tunnel might simply be "a first step."