He was addressing a high-level meeting in Karachi today to review law and order situation there.
The PM said it government would also need to look into the targets missed [he said in indirect reference to the Karachi operation.
Mr. Sharif said government was committed to Karachi operation for the sake of sustainable peace and security in the mega city.
The Prime Minister said there was consensus that a major operation was needed and it has achieved successes during the last 27 months.
He said the operation should have been launched six-seven years back as business community of the world was shy of visiting Karachi because of precarious security situation.
PM Sharif said now the operation has restored confidence of businessmen from abroad.
He said the federal government has been extending necessary cooperation to Sindh government, rangers and intelligence agencies in addressing the security situation in Karachi.
He appreciated the role played by Rangers, intelligence and other agencies in this regard. PM Nawaz said there will be no compromise on the law and order situation of Karachi.
Governor Sindh Dr Ishratul Ibad, Chief Minister Sindh Syed Qaim Ali Shah, Federal Ministers Chaudhry Nisar Ali Khan and Khawaja Muhammad Asif attended the meeting.
Army Chief General Raheel Sharif, DG ISI, DG ISPR, DG IB, Corps Commander Karachi, Chief Secretary Sindh, IG Police Sindh, Home Secretary Sindh, DG Rangers Sindh and senior officials were also present in the meeting.