KABUL, Afghanistan — Afghanistan’s president and other senior leaders announced Thursday that they were rethinking the country’s relationship with Pakistan and its negotiations with the Taliban because talks had yielded so little.

As a result, the leaders said, they planned to work closely with the United States, Europe and India to plan the country’s future.

The shift in Afghanistan’s policies emerged in a statement released by the presidential palace on Thursday after a meeting the night before of senior government officials, including the two vice presidents, the national security adviser and several former military commanders who are close advisers to President Hamid Karzai and who fought to push the Russians out of the country in the 1980s.

“Despite making repeated attempts in the past three years, including sending several letters to the Taliban to open negotiations in order to bring peace and stability to the country, our leaders, scholars, influential figures, elders, women and children, old and young are being martyred,” the statement said, referring to a string of assassinations this year, most recently the killing of Burhanuddin Rabbani, the chairman of the peace council.