India and Pakistan on Wednesday began talks to iron out differences over demilitarisation of Siachen Glacier, the world's highest battlefield.

Defence Secretary Ajai Vikram Singh, leading an eight-member Indian delegation, kicked off the two-day talks with his Pakistan counterpart Tariq Waseem Ghazi at the General Headquarters of the Pakistan Army in Rawalpindi.

The two sides are hoping to reach an understanding on demilitarising Siachen during this ninth round of dialogue.

Any such understanding will provide relief to their troops, which were deployed in the most inhospitable conditions.

On arrival, Singh said India was optimistic that progress will be achieved in the current round of talks.

Pakistan is expected to maintain its old stand of willingness to agree for simultaneous pull back of troops to pre-1984 positions but would not authenticate the present positions held by India on Siachen on the maps as demanded by New Delhi, media reports in Islamabad speculated.

Pakistan Foreign Office spokesman Jalil Abbas Jilani said ahead of talks, "We hope our discussions result in resolution of Siachen issue in accordance to the 1989 bilateral agreement."

The two countries will hold talks about Sir Creek on May 28 and 29 in Islamabad.