Zardari's comments come at a time when the country is debating on how to handle terror posed by Taliban. The chief of the main opposition Pakistan People's Party (PPP), told the BBC that Pakistan must "wake up" to the threat posed by militancy.
Prime Minister Nawaz Sharif's government has been under fire for failing to handle the situation in the country which is torn by strife.Pakistan, since 2007, has been battling a homegrown Taliban insurgency. According to official reports, at least 110 people were killed in attacks in January.
The government has been pushing to resolve issues through dialogues. But the 25-year-old Zardari said he would only be willing to negotiate terms for the militants' surrender. "I think we've exhausted the option of talks. Dialogue is always an option but we have to have a position of strength," he told the BBC.
"How do you talk from a position of strength? You have to beat them on the battlefield. They're fighting us", the youngster said.
The United States has also been pressurising Pakistan to wipe out militant strongholds, saying insurgents were using rear bases in North Waziristan to mount attacks on US troops in Afghanistan.
Benazir Bhutto was assassinated in December 2007 at a PPP campaign rally. Her husband and Bilawal's father Asif Ali Zardari was president from 2008-2013.
(With BBC inputs)