New Delhi, June 20: Hitting out at Pakistan President Pervez Musharraf for his "provocative" statement threatening India with the use of nuclear weapons, Congress today asked the government to be cautious while dealing with him. "Musharraf's statement is unwarranted, provocative and has come at a time when India has taken the initiative for resumption of dialogue and improvement of environment in the sub-continent", party spokesman Anand Sharma told reporters. He said that government needed to be cautious over dealing with Musharraf and military leaders of Pakistan who repeatedly shift positions on issues like cross border terrorism. Stating that while the Congress was for a constructive dialogue with Islamabad, he said at the same time, "we do expect government to remain alert about the possible pitfalls". Bureau Report