India's premier vowed Saturday to put down with "force and determination" Kashmiri rebel groups. Prime Minister Manmohan Singh is likely to meet with Pakistani President Gen. Pervez Musharraf in New York on the sidelines of the U. N. General Assembly session next month. "Cross-border terrorism continues to pose a serious challenge in Jammu-Kashmir. We shall meet this challenge with force and determination," Singh said in a speech Saturday.