Aug 13 (Reuters) - The Russian rouble weakened slightly

against the dollar on Wednesday as oil prices slipped, with the

market looking ahead to talks between Russian President Vladimir

Putin and his U.S. counterpart Donald Trump later this week.

Russian markets have been jittery since Trump set an August

8 deadline for Russia to agree to peace in Ukraine or face

tightened sanctions. All eyes are now on the August 15 meeting

between Trump and Putin in Alaska.

By 0918 GMT, the rouble was down 0.2% at 79.60 to the

dollar, according to data compiled by LSEG based on

over-the-counter quotes, and 0.1% weaker at 11.06 against

China's yuan, the most traded foreign currency in Russia.

Brent crude oil, a global benchmark for Russia's

main export, was down 0.3% at $65.95 a barrel.