On the negative side, the upticks in Ripple were unaffected by the stronger US dollar. On the USD front, the broad-based greenback managed to extend its early morning bullish bias, still flashing green on the day, as investor fears of a slowdown in the global economic recovery from COVID-19 is keeping the market trading sentiment under pressure, which has become a key factor that is helping the safe-haven assets, including the US dollar. The latest outbreaks of COVID-19, including the more virulent Delta variant of the virus, have led to extra restrictive measures in certain countries, including Australia and South Korea. Moving on, the eyes of the investors are now on US inflation, and when the Fed is likely to start tightening its monetary policy, ahead of the release of the US core consumer price index (CPI) for June, which is due on Tuesday. Federal Reserve Chair Jerome Powell is also due to give testimony this week.