WASHINGTON - The United States needs to keep engaging Pakistan despite lingering distrust over Afghanistan, with investment and climate cooperation key to reducing the South Asian nation's growing reliance on China, a study group recommended on Tuesday.

The group released its findings during a visit to Washington by the head of Pakistan's powerful military, General Qamar Javed Bajwa, a week after a trip by the civilian foreign minister, Bilawal Bhutto Zardari.

The study group, which did not involve the US government, included scholars and former US ambassadors to Pakistan Ryan Crocker, Cameron Munter and Robin Raphel, along with Husain Haqqani, Pakistan's former ambassador in Washington.

Pakistan and the US were partners in the Cold War and, officially, in the Afghanistan war.

But American officials lost patience with Islamabad which they suspected of quietly maintaining support for the Taliban, who triumphed as US troops withdrew last year.

"Instead of allowing existing differences to define the partnership, it may be time to recognise that both sides need to understand the other's interests so that they can then find a way to work on areas of mutual concern," the study group said.

The US must move beyond leveraging aid to change Pakistan's policies, a tactic that has been a proven failure.

Islamabad, in turn, needs to accept "that all of Pakistan's problems, especially terrorism and militancy, cannot be laid at the door of the US."

Pakistan has forged increasingly close relations with China, triggering warnings from the US that Beijing - seen as Washington's key global competitor - will saddle the economically troubled nation with debt.

The study group said that after previously linking the Pakistan relationship to Afghanistan or its historic rival India, the US should avoid now seeing ties through the lens of China.

Instead, the US can "help build Pakistan's capacity for transparency and compliance" on Chinese loans and can reduce reliance on China by encouraging investment by US companies and others, it said.

The US can also focus on building climate resilience - a key challenge for Pakistan, which was recently devastated by floods.

While the US wants to step back from Afghanistan, the study group said the need for counterterrorism cooperation with Pakistan "has if anything increased" due to the loss of US intelligence assets on the ground.

"While Pakistan and the US often fail to see eye-to-eye when it comes to Afghanistan, China, or India, they do share mutual interests in seeking stability in the region, combating the problem of extremism and averting armed conflict in nuclear South Asia," it said. AFP