Speculators' net long bets on the U.S. dollar fell for a third straight week, according to calculations by Reuters and U.S. Commodity Futures Trading Commission data released on Friday.

HOUSTON (Reuters) -Oil slipped on Friday, posting a weekly loss of nearly 5%, on the prospect of weaker global growth, higher interest rates and COVID-19 lockdowns in China hurting demand even as the European Union considers a ban on Russian oil that would further tighten supply.

The dollar surged to a more than two-year high on Friday, continuing to draw support from Federal Reserve Chair Jerome Powell's comments on Thursday that seemed to back a half a percentage point tightening at next month's policy meeting, as well as his remarks on a likely consecutive rate hikes this year.

U.S. President Joe Biden took an unusually harsh swipe at his Republican opponents during Earth Day remarks on Friday, calling their party the "MAGA party," a reference to former President Donald Trump's "Make America Great Again" slogan.

Boeing Co is preparing for a new delay in the 777X program, the Air Current aviation industry publication reported on Friday.