Pentagon chief seeks to reassure NATO over US troop plans

U.S. Secretary of Defense Mark Esper speaks during a joint press conference with NATO Secretary General Jens Stoltenberg at NATO headquarters in Brussels, Friday, June 26, 2020. U.S. Secretary of Defense Mark Esper is at NATO to meet with NATO Secretary General Jens Stoltenberg and to follow-up on a broad range of issues raised during last week's NATO defense ministerial. (AP Photo/Virginia Mayo, Pool)

NATO Secretary General Jens Stoltenberg, right, walks with U.S. Secretary of Defense Mark Esper prior to a press conference at NATO headquarters in Brussels, Friday, June 26, 2020. U.S. Secretary of Defense Mark Esper is at NATO to follow-up on a broad range of issues raised during last week's NATO defense ministerial. (AP Photo/Virginia Mayo, Pool)

U.S. Secretary of Defense Mark Esper, left, and NATO Secretary General Jens Stoltenberg participate in a joint press conference at NATO headquarters in Brussels, Friday, June 26, 2020. U.S. Secretary of Defense Mark Esper is at NATO to follow-up on a broad range of issues raised during last week's NATO defense ministerial. (AP Photo/Virginia Mayo, Pool)

U.S. Secretary of Defense Mark Esper speaks during a joint press conference with NATO Secretary General Jens Stoltenberg at NATO headquarters in Brussels, Friday, June 26, 2020. U.S. Secretary of Defense Mark Esper is at NATO to follow-up on a broad range of issues raised during last week's NATO defense ministerial. (AP Photo/Virginia Mayo, Pool)

U.S. Secretary of Defense Mark Esper, left, and NATO Secretary General Jens Stoltenberg participate in a joint press conference at NATO headquarters in Brussels, Friday, June 26, 2020. U.S. Secretary of Defense Mark Esper is at NATO to follow-up on a broad range of issues raised during last week's NATO defense ministerial. (AP Photo/Virginia Mayo, Pool)

NATO Secretary General Jens Stoltenberg speaks during a joint press conference with U.S. Secretary of Defense Mark Esper at NATO headquarters in Brussels, Friday, June 26, 2020. U.S. Secretary of Defense Mark Esper is at NATO to follow-up on a broad range of issues raised during last week's NATO defense ministerial. (AP Photo/Virginia Mayo, Pool)