KARACHI, PAKISTAN — Pakistan’s Foreign Ministry on Saturday dismissed as unfounded and “devoid of rationality” assertions by a senior U.S. official that its missile program could eventually pose a threat to the United States. Earlier this week, Deputy National Security Adviser Jon Finer said Pakistan’s development of long-range ballistic missiles made it an “emerging threat.” Finer’s comments, which came a day after Washington announced a new round of sanctions related to the ballistic missile program, underscored the deterioration in once-close ties between Washington and Islamabad since the 2021 U.S. troop withdrawal from Afghanistan. Addressing Finer’s remarks, Pakistan’s Foreign Ministry said