Pakistan cannot match India conventionally in the long term, the report said. (File Photo)
As India's purchasing power and geopolitical influence increases, Pakistan risks increasing global isolation when it comes to purchase of high-tech defence items, an American think-tank has said.
"Over the long term, Pakistan may be unable to access the most advanced weapons systems in the global marketplace. Instead, it may have little choice but to continue to rely on Chinese and possibly Russian military systems, which may or may not be the most appropriate for Pakistan's defence needs," the Stimson Center said in a report.
"Pakistan's access to high-end technology could be constrained by India's purchasing power and growing geopolitical influence," said the report entitled 'Military Budgets in India and Pakistan: Trajectories, Priorities, and Risks'.
American military aid accounted for 21 per cent of Pakistan's defence spending between 2002-2015, allowing the country to maintain high levels of military spending while easing the burden on its federal budget and overall economy.
"The US has begun to gradually downgrade its assistance to Pakistan in the near to medium term," it said, adding that the support in Washington for the bilateral relationship has declined as Pakistan seems unable or unwilling to address concerns about violent extremist groups that direct their focus to Afghanistan and India.
India is a larger and more attractive market for global defence companies, and will continue to be for the foreseeable future, the report said, adding that the country has become the world's largest arms importer.
India accounted for 14 percent of global arms imports from 2011-2015, a 90 per cent increase over the previous five years.
"Countries and companies who otherwise would be interested in having a defence relationship with Pakistan may be reluctant to do so out of concerns about falling out of favor in New Delhi," the report said.
"In the long run, Pakistan will have to make tough choices about purchasing big-ticket weapons systems unless it can do so at concessionary rates," it said.
The "almost-certain decline" in military and financial support from the United States will force Pakistan to carry a greater share of its defence spending, it said.
According to the report, Pakistan cannot compete with India when it comes to military expenditure, which is why it might step up spending in nuclear weapons.
However, it warned that investments in nuclear weapons at the expense of conventional capabilities would weaken Pakistan's ability to deal with counter terrorism challenges inside the country.
Pakistan, it said, cannot match India conventionally in the long term, and any attempt to do so will exhaust its economy, it said.
"Responding to adverse defense spending trends with increased reliance on nuclear weapons, especially short-range weapons, may be a cost effective approach, but it is likely to diminish Pakistan's national security."
The report said Pakistan's defense budget is higher than official estimates. "Although Pakistan has increased the transparency of its defense spending in recent years, the country's budget documents raise more questions than answers."
India spends at least four per cent of its defense budget on nuclear weapons, while nuclear weapons account for at least 10 percent of Pakistan's military spending.
In 2016, Pakistan will spend at least $747 million on nuclear weapons, and India will spend $1.9 billion.
Pakistan, it said, cannot match India conventionally in the long term, and any attempt to do so will exhaust its economy.