Oil prices clamber towards 7-year highs on Russia-Ukraine tensions

Investors are also watching talks between the United States and Iran to revive the 2015 nuclear deal

Oil prices rose on Monday, climbing towards their highest levels in more than seven years on fears that a possible invasion of Ukraine by Russia could trigger sanctions from U.S. and Europe and disrupt energy exports from the world's top producer.

Brent crude futures was at $95.73 a barrel by 0109 GMT, up $1.29, or 1.4%, after earlier hitting an intraday high of $95.91. U.S. West Texas Intermediate (WTI) crude rose $1.49, or 1.6%, to $94.59 a barrel, hovering near a session-high of $94.92.

Comments from the United States about an imminent attack by Russia on Ukraine have rattled global financial markets.

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