`US ramps up surveillance of Pakistan`s nuclear arms`

US has ramped up its surveillance of Islamabad`s nuclear arms, the Washington Post reported citing top secret budget documents.

US steps up surveillance of Pakistan`s nuclear arms: Report

The US, which spends billions monitoring adversaries like Al Qaeda, North Korea and Iran, pays an equally intense focus on ally Pakistan and has ramped up surveillance of its nuclear arms, according to a report.

`Pak, US headed for showdown over N-arms`

The US reportedly plans to force Pakistan to sign the Fissile Material Cutoff Treaty.