By Tim Cocks

JOHANNESBURG, Jan 10 (Reuters) - China, Russia and Iran began a week of joint naval exercises in South Africa's waters on Saturday in what the host country described as a BRICS Plus operation to "ensure the safety of shipping and maritime economic activities".

BRICS Plus is an expansion of a geopolitical bloc originally comprising Brazil, Russia, India, China and South Africa - and seen by members as a counterweight to U.S. and Western economic dominance - to include six other countries.

Though South Africa routinely carries out naval........

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