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The dominant power in the 20th century, America’s alliances and rivalries now look so different.
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Sun 9 Aug 202021:50GMT
BBC World Service East and Southern Africa & West and Central Africa only
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- Sat 8 Aug 202004:50GMTBBC World Service except East and Southern Africa & South Asia
- Sat 8 Aug 202017:50GMTBBC World Service
- Sun 9 Aug 202003:50GMTBBC World Service East and Southern Africa & South Asia only
- Sun 9 Aug 202021:50GMTBBC World Service East and Southern Africa & West and Central Africa only
