India and France have reviewed progress in a multibillion-dollar deal to purchase French fighter jets for the Indian air force and a separate agreement to build the world's biggest civilian nuclear power complex in western India.

Visiting French President Francois Hollande and Indian Prime Minister Manmohan Singh held talks Thursday in New Delhi that also focused on defense, regional security and cooperation in space exploration.

Last year, India agreed to an $11 billion deal to purchase 126 French combat aircraft. However, tough negotiations remain on costs, technology transfers and other details.

French nuclear giant Areva and a state-owned Indian nuclear power company are also fine-tuning an agreement to build six nuclear reactors. When commissioned, the 9,900-megawatt complex will be the world's largest nuclear power station.