Prime Minister David Cameron says there are "questions we have to ask" over Pakistan's involvement with Al-Qaeda following the killing of Osama Bin Laden within a mile of a military training academy.
But speaking to John Humphrys, he said the "democratic forces" within Pakistan were "staunch" in their fight against terrorism, and that it was "in our interest" to support them.
"If we turn away from it and give up on them... you're left with a nuclear power in danger of massive extremism".
The Al-Qaeda leader's death should be used in Afghanistan to persuade the Taliban to "give up the fight", he said.
Away from international affairs, Mr Cameron reiterated his support for first past the post in the AV referendum.
interview with Deputy Prime Minister Nick Clegg,
he said that "obviously both of us want to win" but downplayed tensions within the coalition.
"The current system is simple... fair... and decisive," he said and was "very proud" of the Conservative campaign against reform. The non-Conservative campaign, he said, "can defend themselves".
On a final point he urged people to get a "sense of humour" over his "calm down dear" comments in PMQs, but admitted that he had now "conceded defeat over ending Punch and Judy politics".
Get in touch with Today via
or text us on 84844.