Senator McCain said – just months ago – that “Afghanistan is not in trouble because of our diversion to Iraq.” I could not disagree more. Our troops and our NATO allies are performing heroically in Afghanistan, but I have argued for years that we lack the resources to finish the job because of our commitment to Iraq. That’s what the Chairman of the Joint Chiefs of Staff said earlier this month. And that’s why, as President, I will make the fight against al Qaeda and the Taliban the top priority that it should be. This is a war that we have to win.

I will send at least two additional combat brigades to Afghanistan, and use this commitment to seek greater contributions – with fewer restrictions – from NATO allies. I will focus on training Afghan security forces and supporting an Afghan judiciary, with more resources and incentives for American officers who perform these missions. Just as we succeeded in the Cold War by supporting allies who could sustain their own security, we must realize that the 21st century’s frontlines are not only on the field of battle – they are found in the training exercise near Kabul, in the police station in Kandahar, and in the rule of law in Herat.

Moreover, lasting security will only come if we heed Marshall’s lesson, and help Afghans grow their economy from the bottom up. That’s why I’ve proposed an additional $1 billion in non-military assistance each year, with meaningful safeguards to prevent corruption and to make sure investments are made – not just in Kabul – but out in Afghanistan’s provinces. As a part of this program, we’ll invest in alternative livelihoods to poppy-growing for Afghan farmers, just as we crack down on heroin trafficking. We cannot lose Afghanistan to a future of narco-terrorism. The Afghan people must know that our commitment to their future is enduring, because the security of Afghanistan and the United States is shared.

The greatest threat to that security lies in the tribal regions of Pakistan, where terrorists train and insurgents strike into Afghanistan. We cannot tolerate a terrorist sanctuary, and as President, I won’t. We need a stronger and sustained partnership between Afghanistan, Pakistan and NATO to secure the border, to take out terrorist camps, and to crack down on cross-border insurgents. We need more troops, more helicopters, more satellites, more Predator drones in the Afghan border region. And we must make it clear that if Pakistan cannot or will not act, we will take out high-level terrorist targets like bin Laden if we have them in our sights.

Make no mistake: we can’t succeed in Afghanistan or secure our homeland unless we change our Pakistan policy. We must expect more of the Pakistani government, but we must offer more than a blank check to a General who has lost the confidence of his people. It’s time to strengthen stability by standing up for the aspirations of the Pakistani people. That’s why I’m cosponsoring a bill with Joe Biden and Richard Lugar to triple non-military aid to the Pakistani people and to sustain it for a decade, while ensuring that the military assistance we do provide is used to take the fight to the Taliban and al Qaeda. We must move beyond a purely military alliance built on convenience, or face mounting popular opposition in a nuclear-armed nation at the nexus of terror and radical Islam.

Only a strong Pakistani democracy can help us move toward my third goal – securing all nuclear weapons and materials from terrorists and rogue states. One of the terrible ironies of the Iraq War is that President Bush used the threat of nuclear terrorism to invade a country that had no active nuclear program. But the fact that the President misled us into a misguided war doesn’t diminish the threat of a terrorist with a weapon of mass destruction – in fact, it has only increased it.

In those years after World War II, we worried about the deadly atom falling into the hands of the Kremlin. Now, we worry about 50 tons of highly enriched uranium – some of it poorly secured – at civilian nuclear facilities in over forty countries. Now, we worry about the breakdown of a non-proliferation framework that was designed for the bipolar world of the Cold War. Now, we worry – most of all – about a rogue state or nuclear scientist transferring the world’s deadliest weapons to the world’s most dangerous people: terrorists who won’t think twice about killing themselves and hundreds of thousands in Tel Aviv or Moscow, in London or New York.