GBP/USD climbs to 1.2620, with Asia in risk-on mode

O/n drop in UST yields broadly suppressing USD; 10y 4.192%

But opportunistic GBP bulls face a daunting chart outlook

Ceiling of Bollinger downtrend channel at 1.2644 caps

Mon close above that resistance needed to break out higher

Failure to do so keeps GBP/USD on track toward 1.2500 barrier

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