Jan 13 (Reuters) - Indian shares slipped in broad-based selling on Tuesday after fresh tariff threats from U.S. President Donald Trump reignited global trade uncertainty, outweighing optimism around India-U.S. trade talks and quarterly earnings.

The Nifty 50 fell 0.22% to 25,732.3, while the Sensex shed 0.3% to 83,627.69.

Both benchmarks rose 0.4% on Monday, snapping a five-session losing streak, after Washington's newly-appointed ambassador to New Delhi said the two countries would discuss trade issues in a call on Tuesday.

"The absence of decisive follow-through buying has kept the broader market outlook guarded," said Dhupesh Dhameja, derivatives research analyst at SAMCO Securities.

Tariff jitters persisted after Trump warned of an extra 25% tariff on countries doing business with Iran.

India's bilateral trade with Iran totalled $1.34 billion in the first 10 months of 2025, with key exports including basmati rice, fruits and vegetables, and pharmaceuticals.

"Global trade uncertainty and India-U.S. trade impasse are adding to near-term market nervousness and delaying a normalisation in foreign fund flows," said analysts led by Bino Pathiparampil of Elara Securities.

Foreign investors offloaded Indian stocks worth $1.72 billion in January so far after a record $19 billion outflow in 2025.

Ten of the 16 major sectors fell. The small-caps rose 0.6% and mid-caps lost 0.2%.

Among stocks, Reliance Industries fell 2.1% after rising 0.5% on Monday. The oil-to-telecom group had dropped 7.4% last week after saying it does not expect any Russian crude deliveries.

Larsen & Toubro fell 3.3% after a report said Kuwait eyed cancelling oil project tenders. L&T, which was the lowest bidder for tenders worth over $4.5 billion, clarified that the projects were not part of its order book.

Online food delivery platform Zomato-parent Eternal gained 3.3% after higher foreign ownership headroom raised expectations of higher weightage in MSCI indexes.

(Reporting by Bharath Rajeswaran in Bengaluru; Editing by Sumana Nandy, Rashmi Aich and Eileen Soreng)

By Bharath Rajeswaran