You got it wrong there .... Sri Lankan and Pakistani forces are not training "together" !!!!!! Sri Lankan armed forces have been asked to provide "training" to Pakistani armed forces on counter insurgency operations :D
Hope you get it now !!!!
As for supplying arms to Sri Lanka .... think Pakistan army did not think it through .... now they are running short of "equipment" :D
Thank god you Indians are so incompetant or it might have mattered. As it stands, we dont need equipment to defeat you in any potential war, as your malnoursihed and incompetant soldiers would do the trick for us:)