India, March 25 -- Indian shares ended a choppy session on a flat note Tuesday after U.S. President Trump said he will announce tariffs on automobiles, aluminum and pharmaceuticals in the near future.

Amid ongoing trade talks with the U.S., India is contemplating broader tariff reforms to reduce barriers uniformly, but these discussions remain in preliminary stages, media reports said.

Also, in a fresh geopolitical challenge to India's oil import strategy, Trump has threatened to impose 25 percent "secondary tariffs" on countries importing Venezuelan oil, including India and China, starting 2 April.

Analysts said the move could severely impact India's energy security and crude procurement strategy.

The benchmark S&P/BSE Sensex hit an in...