Washington, July 25 - The US Senate has approved the country's defence budget with an amendment aimed at ensuring that military assistance for Pakistan is actually being used only to fight the Taliban and Al Qaeda.

The bipartisan amendment moved by Democrat Robert Menendez and Republican Bob Corker would mandate a certification by the secretaries of state and defence, before Pakistan is reimbursed with Coalition Support Funds, that the payment is both in the national security interests of the US, and will not affect the balance of power in the region.

'To this point, almost eight years and more than seven billion in American taxpayer dollars for Pakistan's military have not prevented the Taliban and Al Qaeda from regrouping along the Pakistan-Afghanistan border,' said Menendez.

'The fight against these extremists is crucial for our own security, which is why we have to certify that our support is in fact doing what we intend it to do and is not being used for other purposes.