* Futures down: Dow 0.54%, S&P 500 0.63%, Nasdaq 0.65%

* Sandisk ( SNDK ) rises on Nasdaq-100 inclusion

* Goldman Sachs ( GS ) kicks off US earnings season

(Updates prices, adds analyst comment)

By Niket Nishant and Avinash P

April 13 (Reuters) - Wall Street futures slipped on

Monday after talks between the U.S. and Iran over the weekend

failed to deliver a deal to end the war.

The declines indicate that any relief from the ceasefire

reached last week could be fleeting, underscoring the risks of

leaning too heavily into bullish bets when the geopolitical

environment remains uncertain.

The main U.S. stock indexes logged their second consecutive

week of gains on Friday on hopes that the peace talks in

Pakistan would bear fruit.

On Monday, however, Dow E-minis fell 261 points, or

0.54%, as of 06:44 a.m. ET, S&P 500 E-minis dropped 43.5

points, or 0.63%, and Nasdaq 100 E-minis slipped 165.5

points, or 0.65%.

Adding to the unease, the U.S. military is hours away from

beginning a blockade of all maritime traffic entering or leaving

Iranian ports and coastal areas, in a move aimed at ramping up

pressure on Tehran.

"For the Iranians who up to now have felt that time is on

their side, it puts pressure on their allies to encourage Iran

to come to the table to make a deal," said William Blair's macro

analyst Richard de Chazal.

The CBOE Market Volatility Index, the market's fear

gauge, climbed to 21.32 points.

The shift in sentiment was also visible across other asset

classes, with investors gravitating toward the safe-haven U.S.

dollar while trimming exposure to equities across geographies.

Oil prices jumped back above $100 a barrel, aggravating

inflation worries after data last week showed that a record

surge in the cost of gasoline and diesel prompted the biggest

increase in U.S. consumer prices in nearly four years in March.

"We are back in the realm of a wide range of plausible

outcomes, from another round of negotiations during a patchy

ceasefire... to a full resumption of hostilities," said Hasnain

Malik, Tellimer's geopolitical risk and EM equity strategist.

Investor attention now turns to the start of the U.S.

earnings season, with Goldman Sachs ( GS ) scheduled to report

before the bell. Commentary from the investment banking giant's

executives will be parsed for clues on how the Middle East

conflict, now in its seventh week, is impacting the economy and

capital markets.

Goldman shares inched 0.3% higher in premarket trading,

outperforming most of its Wall Street peers.

Travel-related stocks fell, with carriers such as Delta Air

Lines ( DAL ) and JetBlue Airways ( JBLU ) down 1.8% and 1.9%,

respectively, on concerns that higher oil prices might push up

fuel costs.

Energy stocks gained, with Chevron ( CVX ), Exxon Mobil ( XOM )

and ConocoPhillips ( COP ) climbing 2.2%, 2.5% and 2.8%,

respectively.

Sandisk ( SNDK ) added 1.4% premarket as the memory

chipmaker was on track to join the Nasdaq-100 index on

April 20.