ISLAMABAD, Pakistan — The United States plans to provide $250 million in emergency aid to help resettle and sustain civilians displaced by the Pakistani military’s campaign against militant groups, senior American officials said Monday night after the first day of a visit by Secretary of State John Kerry.

The announcement came after a day of meetings and talks with senior Pakistani officials, including a lengthy dinner with Prime Minister Nawaz Sharif.

Mr. Kerry’s visit here comes almost one month after the Pakistani Taliban carried out an attack on an army-run school in the northern city of Peshawar that left scores of schoolchildren and teachers dead. Pakistan responded by intensifying its military offensive against the militant group in the North Waziristan tribal region and by announcing a “national action plan” that, among other moves, established military tribunals to try militant suspects.

A senior State Department official said before the meetings here that Mr. Kerry would emphasize that Pakistan’s crackdown against militants should be extended to the Haqqani network, which has organized attacks in Afghanistan against American and local forces; to Afghan Taliban fighters who have sought refuge in Pakistan; and to Lashkar-e-Taiba, a Pakistani group that is widely believed to be responsible for the 2008 terrorist attack in Mumbai, India.