ISLAMABAD, Pakistan (AP) _ Uneasy neighbors Pakistan and India signed an agreement Friday to start bus service across their border.

The bus service is scheduled to begin in January, according to a joint statement. Details have yet to be worked out.

In the past 51 years, Pakistan and India have fought three wars, two of them over the disputed Himalayan state of Kashmir.

The agreement followed two days of negotiations in the Pakistani capital of Islamabad.

Pakistan and India conducted underground nuclear tests in May and declared themselves nuclear powers. The international community has been pushing both countries to find ways to improve relations and they have held several rounds of talks.

The latest agreement to start bus service is expected to boost trade and contact between the two South Asian countries. Pakistan has also agreed to sell electricity to India.