Six killed as two copters crash in Rio de Janeiro

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Droughts, floods and heatwaves may intensify as weather pattern returns

• US president hints at signing in Europe • Believes supreme leader Mojtaba Khamenei personally approved deal • Ira

Defamation: SC allows Imran to contest claim

Fossil includes a Tarbosaurus bataar skeleton originally found in Gobi Desert

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Healey resigns following difference over govt's Defence Investment Plan