The US Senate on Thursday approved a vast military spending bill that tied strings to military aid to Pakistan and aimed to stem the spread of shoulder-fired anti-aircraft missiles from Libya. The $662 billion annual Defence Authorisation legislation also included a murky compromise on the issue of whether the US government may hold suspected terrorists, including American citizens, indefinitely without trial. The bill, which sailed to passage by a lopsided 93-7 margin, included tough new sanctions aimed at cutting off Iran’s central bank from the global financial system in a bid to force Tehran to halt its alleged nuclear programme. The legislation included a provision by Democratic Senator Bob Casey aimed at blocking counterinsurgency aid to Pakistan until Islamabad takes aggressive steps to curb the use of roadside bombs blamed for the deaths of US soldiers in neighbouring Afghanistan.