TOKYO, Aug 4 (Reuters) - Japanese government bond yields

fell on Tuesday as lower oil prices, driven by hopes of a

de-escalation in the Middle East conflict, eased inflation

concerns and investors awaited the result of a 10-year debt

auction later in the day.

Here are a few details:

* The benchmark 10-year JGB yield fell 2

basis points (bps) to 2.800%. Yields move inversely to bond

prices.

* The 20-year JGB yield slid 1.5 bps to

3.670%. The 30-year yield sank 1 bp to 3.970%.

* The two-year yield, the most sensitive to

Bank of Japan policy rates, decreased 1 bp to 1.55%. The

five-year yield fell 1 bp to 2.075%.

* U.S. Treasury yields declined overnight amid easing oil

prices on hopes tensions between Washington and Tehran would

ease, though traders remained alert to the prospect of a Federal

Reserve rate hike if the war drags on.

* On Monday, JGB yields rose as some investors took joint

intervention by the U.S. and Japan to support the yen as a

signal for an accelerated pace of BOJ policy tightening.

* Japan's finance ministry is set to auction about 2.6

trillion yen of 10-year maturities later in the day.

* Analysts expect relatively weak auction results, citing

growing but still uncertain prospects of faster BOJ rate hikes

after the coordinated yen-buying intervention.

* Investors also remained concerned over Japan's fiscal

health after the ruling party approved the government's plan for

a temporary cut in sales tax on food and beverages.

* "There has been no major change in the situation that

makes it difficult to take positions in long-dated bonds," said

Naoya Hasegawa, chief bond strategist at Okasan Securities.

(Reporting by Satoshi Sugiyama; Editing by Subhranshu Sahu)