The Middle East crisis has amplified volatility and uncertainty across energy markets.

Oil prices slipped and stock markets were mixed Friday as traders reacted to Mideast war developments and concerns over the AI sector.

The dollar retreated against main rivals ahead of key US jobs data later in the day.

European stock markets gained after losses in Asia and on Wall Street caused by weakness among some technology companies.

"The focus in the oil market remains on developments in the Persian Gulf, but the market's reaction to news has recently been somewhat more subdued than in recent weeks," said Commerzbank analyst Norman Liebke.