India's assurance was conveyed by External Affairs Minister Sushma Swaraj who called on Afghan President Hamid Karzai and held a wide-ranging talks on political and security situation, ahead of the NATO drawdown later this year.
During the meeting, the two sides agreed to intensify cooperation in areas like security and defence.
Swaraj also inaugurated a new USD 40 million Indian Embassy building in the heart of Afghan Kabul, featuring an integrated security system.
"India is prepared to do whatever is possible, whichever capabilities and means, to work with Afghan government and its people to realise this vision.
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"India is here to stay," she said.
During her meeting with Karzai, Swaraj expressed India's strong commitment to continue extending its all possible help to Afghanistan to meet various challenges and conveyed that it will remain engaged in the country's reconstruction activities in a significant way.
Both the sides underlined the need for expanding trade ties.
Swaraj, who is on her first visit here as External Affairs Minister, drove straight from the airport to presidential palace where she held talks with Karzai on various key issues.
Sources said entire political situation was also discussed during the meeting.
Swaraj said India will speed up various development projects in Afghanistan.
As NATO forces prepare to withdraw from the country, Afghanistan wants India to help it in meeting security challenges. Afghanistan has been pressing India for supply of military hardware and weapons system to it.
Karzai has already given a "wish-list" to India.