GBP/USD lost critical support at 1.3545 as the cable tumbled down due to  Fed-related dollar strength and the UK’s dire COVID situation. 1.3445  now turns from support to resistance. It is followed by 1.3640, a swing  high last week, followed by the recent peak of 1.3705. EUR/USD loses  further traction and drops below the 1.22 level. The recovery in the  greenback keeps the pair under pressure. The Sentix index returned to the positive territory in January. Dollar  Index was up 0.3% at 90.335, and is now over 1% higher than the almost  three-year low it hit last week. USD/JPY was up 0.2% at 104.16, while  the risk-sensitive AUD/USD was down 0.8% at 0.7701.