FOREX-Aussie buoyed by trade optimism, sterling sags again

* Aussie nears five-month high, Kiwi close behind
* Sterling back under pressure near $1.29
* Euro/dollar directionless ahead of holidays
* Graphic: World FX rates in 2019 http://tmsnrt.rs/2egbfVh

LONDON, Dec 24 (Reuters) - Australia's dollar approached
five-month highs on Tuesday, benefiting from optimism about
improved U.S.-China trade relations, with currency markets
elsewhere mostly quiet at the start of the holiday season.
Sterling, which has fallen for five straight days, was under
pressure again as worries about a disruptive Brexit and reduced
liquidity combined to hurt the currency.
The dollar and euro remained in their recent trading range
just below $1.11 EUR=EBS .
The Aussie tends to do well optimism grows over global trade
and China's economy. The United States and China have announced
phase one of a trade deal and markets, despite a lack of
details, see the agreement as a de-escalation in their
long-running trade dispute.
The Australian dollar rose to as much as $0.6930 AUD=D3 ,
within striking distance of its Dec. 13 peak of $0.6939, its
highest level since late July. The currency has gained more than
1% in the past four sessions.
Tohru Sasaki, head of research at J.P. Morgan, said the
Aussie's strength probably "reflects waning concerns over
geopolitical risks."
The New Zealand dollar NZD=D3 traded at $0.6638, just
below a five-month high of $0.6639 hit on Monday. Emerging-
market currencies were also supported.
Sterling weakened to $1.2930 GBP=D3 after reaching a
three-week low of $1.2905 on Monday.
The pound has fallen since Prime Minister Boris Johnson
ruled out extending the transition period before Britain leaves
the European Union beyond December 2020. Many worry that leaves
too little time to negotiate a new trade deal with the EU.
"We expect investor concern about cliff-edge Brexit risk to
diminish, as political incentives do not support the risk of
economic disruption," said Steve Englander, head of global G10
FX research at Standard Chartered bank.
"That said, there is no reason to expect political
brinkmanship to diminish; this is likely to be reflected in high
volatility. We see the GBP becoming stronger, but on a jagged
path."
Against the euro, sterling was flat at 85.75 pence
EURGBP=D3 .
The dollar index, which measures the U.S. currency against a
basket of currencies, edged up to 97.721 .DXY .
Against the Japanese yen the dollar was unchanged at 109.38
JPY=EBS .