He was addressing the main programme organised by his party, in connection with "Stability and Solidarity Day" at the party's headquarters in Azizabad here on Monday, said a statement issued by his party.
The MQM leader paid rich tributes to the officers and personnel who embraced martyrdom in the NATO attack.
He said that this challenge should be converted into an opportunity, and it should be made clear to the world that any adventure against the sovereignty of the country would be strongly dealt with.
He said that the nation should get united in order to make the defence of the country impregnable.
He asserted that his party would not desist from offering any sacrifices.
He said that the army is not alone as the entire nation is firmly behind the armed forces.
Besides MQM leaders and activists, the sympathisers of the party attended the programme in large number.