Mumbai, Aug. 19 -- Indian stock markets opened on a cautious note on Tuesday, with both benchmark indices trading flat in the early session. Investors stayed watchful amid the ongoing Ukraine peace process and awaited global cues.

The Nifty 50 index opened at 24,891.35, gaining 14.40 points or 0.06 per cent, while the BSE Sensex started the day at 81,319.11, up 45.36 points or 0.06 per cent. Market experts said that any development in the Ukraine-Russia truce will act as a major trigger for Indian equities.

Ajay Bagga, Banking and Market Expert, told ANI, "Indian markets are flat this morning and the bond yields rose yesterday on the expectation of higher government borrowings to support the tax cuts loss of revenues. Any Ukraine-Russia...