Voicing concern over Pakistan's inaction against perpetrators of the Mumbai attacks, India has warned that its restraint should not be confused with weakness. Talking to reporters at the Woodrow Wilson Centre in Washington, Foreign Secretary Nirupama Rao said it is "very, very difficult" to resume composite dialogue at present. She said the perpetrators of the Mumbai attacks continue to roam, to speak, to be allowed unhindered access to media in Pakistan and people of India are concerned about it. At the same time, she said the door for talks with Pakistan had never been shut.