Brent crude futures fell 0.8 percent to $92.81 at 0224 GMT after having jumped more $1 than to $95.00 in early trade, its highest level since Wednesday. US West Texas Intermediate (WTI) crude futures similarly fell 52 cents or 0.6% to $90.55 a barrel after having hit a high of $92.93.
French President Emmanuel Macron's office said in a statement on Monday he had pitched to both leaders a summit over "security and strategic stability in Europe." The White House said Biden had accepted the meeting "in principle" but only "if an invasion hasn't happened."
Oil markets have been jittery over the past month on worries a Russian invasion of its neighbour could disrupt crude supplies, but price gains have been limited by the possibility of more than 1 million barrels a day of Iranian crude returning to the market. According to a Reuters report, a senior European Union official said on Friday a deal to revive Iran's 2015 nuclear agreement was "very very close".
Analysts said the market remained tight, and any addition of oil would help, but prices would remain volatile in the near term as Iranian crude would only likely return later this year.