The United States has said that terrorist activities and cross border movements on the Pakistan-Afghanistan border are indeed a problem for the government in Kabul but is also something that Washington and Islamabad are committed to address.

"Specifically along the border, everyone is concerned and remains concerned about cross-border movements from Pakistan into Afghanistan by Taliban or other fighters. And that's something that all countries involved, both Afghan government, Pakistani government and ourselves, are committed to trying to address," State Department's Deputy Spokesman Tom Casey said.

He said that more action needed to be taken given the fact that this was still an issue and was still a problem.

"So, we're all going to keep on working this issue, both as a military one, but certainly also as a political one as well, because we recognise this is something that remains a threat and remains a problem for the government in Afghanistan," Casey told reporters.

He brushed aside the notion that there is a perception of things in Afghanistan being better off in the past noting that while there is violence in the country to be worried about the government of President Hamid Karzai is far better off than when the Taliban was around.