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The U.S. will have access to valuable minerals in Ukraine under the new deal. Meanwhile, PM Mark Carney has affirmed his support for Ukraine. KYIV, Ukraine — After months of tense negotiations, the U.S. and Ukraine signed a deal that is expected to give Washington access to the country's critical minerals and other natural resources, an agreement Kyiv hopes will secure long-term support for its defence against Russia. According to Ukrainian officials, the version of the deal signed Wednesday is far more beneficial to Ukraine than previous versions, which they said reduced Kyiv to a junior partner and gave Washington…