Pakistan, Nov. 2 -- US Secretary of State Marco Rubio said that Washington has "heard" Pakistan's concerns about terrorism emanating from Afghanistan and if "there's a productive role for us to play, we would play it". Rubio's statement came in response to a question about tensions between Afghanistan and Pakistan at a press talks in Atlanta. "Pakistan is concerned about terrorist attacks that are being sponsored from the territory of Afghanistan. They feel as if the Taliban have not done enough to constrain those attacks, and they have taken action against it. "We obviously have heard those concerns on their part. We obviously don't want them to be targeted for terrorism. So if there's a productive role for us to play, we would play it,"...