In his letter, Obama has reiterated his invitation to Modi to visit Washington in September and to work closely with him to make India-US relations a “defining partnership” for the 21st century, said a statement issued by Indian Prime Minister's Office.

Thanking Obama for the invitation, Modi has said that he looks forward to a result-oriented visit in September with "concrete outcomes" that impart "new momentum and energy" to India-US strategic partnership.

It is the view of Prime Minister Modi that re-energising the partnership between the world's oldest and largest democracies - India and US, would send an important message to the region and beyond.

Prime Minister Modi has reiterated his desire to strengthen relations with all neighbours, the statement said.(KH/Si)