AM, There seem to be problems on both sides. And no one wants to take the bull by it's horns on either side.
Agreed it is not easy for the Pakistan side to fight it's own people for what it sees as someone else's war. And may be it doesn't want to do that for the long term considerations too.
And Afghans and USA are getting frustrated by the sanctuaries these fellows so easily get across the border, where they are free to regroup and train. And they are unable to seal the border on their side.
Passing the buck on the other side is so much easier.
Its not the responsibility of US to do house cleaning activity of all the countries where terrorism originates. Every country has its own responsibility of doing it. What best the US can do is, kill them and put pressure on the host countries, which they are already doing.
Lets make one thing clear - the problems in Afghanistan are still primarily due to the Taliban in Afghanistan.
As Indians I understand the desire to project this in the light of kashmir and say that "it is only cross border infiltration that is causing the problems" but that is just a lie , and all you have to do is read the analysis of US military officials and analysts.
The US is struggling to control its own space in Afghanistan, and that is the primary problem.
The infiltration from Pakistan is but a small part of the problem, that affects certain border areas.
Where are all these weapons and explosives coming from?
Pakistan's SF' routinely capture vehicles loaded with explosives and weapons coming
from Afghanistan
into Pakistan.
Where is all the funding for the Taliban coming from?
Western analysts have themselves agreed that the Taliban are getting funded from the drug trade, which is based on the poppy crop in Afghanistan, so what is Pakistan's role in this?
While Talwar is correct that the US's has its own responsibilities, it has failed to perform its responsibilities.
The explosives and weapons smuggled into Pakistan are used for attacks on troops and suicide bombings. The drugs from Afghanistan serve to destabilize Pakistan as well, as an entire industry of crime gets built upon the production, smuggling and distribution of narcotics.
So while Pakistan has its problems, the problems in Afghanistan are singularly the US/NATO's fault, not due to Pakistan or "cross border attacks".