Aug 15 (Reuters) - Russia's rouble hit a more than

one-week low against the dollar on Friday, with all eyes on

talks later in the day between the leaders of Russia and the

United States that investors hope could bring Moscow and Kyiv

closer to a ceasefire.

Russian markets have been jittery since U.S. President

Donald Trump set an August 8 deadline for Russia to agree to

peace in Ukraine or face tightened sanctions.

At 0807 GMT, the rouble was down 0.3% at 80.00 to the

dollar, according to data compiled by LSEG based on

over-the-counter quotes. Earlier in the session, it reached

80.2955, its weakest mark since August 6.

The rouble was 0.4% weaker at 11.09 against China's yuan,

the most traded foreign currency in Russia.

The rouble has lost support of some capital controls after

the government on Thursday abolished a requirement for exporters

to repatriate and sell part of their foreign currency earnings.

This change should not affect FX supply or the rouble rate

too much, Bogdan Zvarich of Promsvyazbank said in a note.

"Investors are now more focused on geopolitical factors,"

Zvarich said. "We expect a moderate decline of the rouble at the

start of next week."

The rouble has also been held back by low oil prices,

reduced government FX interventions this month and declining

export revenues.

Brent crude oil, a global benchmark for Russia's

main export, was up 0.6% on the day at $66.42 a barrel.