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Components of cash flows of hedged items, for example certain interest payments for part of the life of an instrument. Using the benchmark interest rate risk results in other risks such as credit risk and liquidity risk being excluded from the hedge accounting relationship. LIBOR is considered the predominant interest rate risk and therefore the hedged items change in fair value on a fully proportionate basis with reference to this risk. For disclosures of the extent of risk exposures that Barclays Bank Group manages please refer to Risk review section. In respect of many of the Barclays’ Bank Group hedge accounting relationships, the hedged item and hedging instrument change frequently due to the dynamic nature of the risk management and hedge accounting strategy.The Barclays Bank Group risk management strategy is to hedge interest rate risk with interest rate derivatives (predominantly interest rate swaps), currency risk with currency derivatives and inflation risk with inflation derivatives. The interest rate risk management strategy is to reduce Barclays Bank Group’s exposure to interest rate risk to within approved risk limits. Barclays Bank Group applies hedge accounting to dynamic scenarios, predominantly in relation to interest rate risk, with a combination of hedged items (some hedged items are designated by proxy) in order for its financial statements to reflect as closely as possible the economic risk management undertaken. Hedge relationships are analysed and rebalanced on a daily basis. In some cases, if the hedge accounting objective changes, the relevant hedge accounting relationship is de-designated; in some cases a de-designated relationship is replaced with a different hedge accounting relationship. Changes in the GBP value of net investments due to foreign currency movements are captured in the currency translation reserve, resulting in a movement in CET1 capital. The Barclays Bank Group’s strategy is to minimise the volatility of the capital ratios caused by foreign exchange movements, by matching the CET1 capital movements to the revaluation of the Barclays Group’s foreign currency RWA exposures. Net investment hedges are designated where necessary to reduce the exposure to movement in a particular exchange rate to within mandated limits. As far as possible, existing external currency liabilities are designated as the hedging instruments. Hedging relationships are reviewed, and adjusted if necessary, at least once a month. Sources of ineffectiveness affecting hedge accounting are as follows:(i) Mismatches between the contractual terms of the hedged item and hedging instrument, including basis differences between the hedged risk and the risk exposure of the hedging instrument;(ii) Changes in credit risk of the hedging instruments;(iii) If a hedge accounting relationship becomes over hedged. This might occur in hedges of net investments if the net asset value designated at the start of the period falls below the amount of the hedging instrument;(iv) In cash flow hedging solution, when a hedge is built using external swaps having non-zero present value, it creates ineffectiveness.