By Marc Jones LONDON (Reuters) – World shares were struggling to extend a bounce off four week lows on Tuesday, oil prices were at their highest in well over two years, while indecisive bond markets were stuck flip-flopping on inflation and interest rate moves. Europe’s STOXX 600 was quick to give back early gains as falls in technology and healthcare stocks – the main winners from the COVID pandemic – offset a modestly higher UK FTSE with its oil and mining firms. [.EU] It bucked some solid gains in Asia and Wall Street overnight but government bond prices also fell as fixed income investors …

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