BAGRAM AIR BASE: President Barack Obama marked the anniversary of Osama bin Laden's death with a speedy trip to Afghanistan, signing a strategic pact with Kabul on Wednesday and delivering an election-year message to Americans that the war is winding down.
Shortly after arriving under the cover of darkness, Obama and Afghan President Hamid Karzai signed a strategic partnership agreement at the Afghan leader's palace that sets out a long-term US role in Afghanistan, including aid and advisers.
The deal may provide Afghans with reassurances that they will not be abandoned when most NATO combat troops leave in 2014. For Obama, it was an opportunity to draw a line under a war started by his predecessor in response to the September 11, 2001 attacks, but which is now widely unpopular at home.
"My fellow Americans, we have traveled through more than a decade under the dark cloud of war. Yet here, in the pre-dawn darkness of Afghanistan, we can see the light of a new day on the horizon," Obama said in a televised address to the American people against the backdrop of armored vehicles and a US flag.
"As we emerge from a decade of conflict abroad and economic crisis at home, it's time to renew America," he said. "This time of war began in Afghanistan, and this is where it will end."
Nearly 3,000 US and NATO soldiers have died during the Afghanistan war since the Taliban rulers were ousted in 2001.
Obama visited with troops during a stay of roughly six hours in the country and emphasised Bin Laden's demise, an event that his re-election campaign has touted as one of his greatest achievements in office. Obama left Afghanistan on Air Force One shortly after delivering his speech.
"Not only were we able to drive al Qaeda out of Afghanistan, but slowly and systematically we have been able to decimate the ranks of al Qaeda, and a year ago we were able to finally to bring Osama bin Laden to justice," Obama said to cheers.
But even as he asserted in his speech that there was a "clear path" to fulfilling the US mission in Afghanistan and made his strongest claim yet that the defeat of al Qaeda was "within reach," he warned of further hardship ahead.
"I recognise that many Americans are tired of war ... But we must finish the job we started in Afghanistan and end this war responsibly," he said at Bagram airbase outside of Kabul, where only months ago thousands of Afghans rioted after US troops accidentally burned copies of the Quran, the Muslim holy book.
The incident plunged already tense relations to their lowest point in years.
While speaking in broad terms of "difficult days ahead," Obama did not address some of the thorniest challenges.
Those include corruption in Karzai's weak government, the unsteadiness of Afghan forces in the face of a resilient Taliban insurgency, and Washington's strained ties with Pakistan where US officials see selective cooperation in cracking down on militants fueling cross-border violence.
Those risks, along with the tactical gains US commanders see in parts of the country, were laid out in a new Pentagon report released on Tuesday.
Obama met Karzai at his walled garden palace in Kabul, where they signed the Strategic Partnership Agreement (SPA). "By signing this document, we close the last 10 years and open a new season of equal relations," Karzai said after the meeting.
Within Afghanistan, the palace signing ceremony was aimed at sending a message to the Taliban and other groups that they cannot wait out 130,000 foreign troops and retake power.
The agreement does not specify whether a reduced number of US troops, possibly special forces, and advisers will remain after NATO's 2014 withdrawal deadline. That will be dealt with in a separate status of forces agreement still being worked out.
Tough security for Obama
Large parts of central Kabul surrounding Karzai's palace were locked down for the Obama's arrival, with police sealing off streets around the city's walled Green Zone, home to most embassies and NATO's Afghanistan headquarters.
Insurgents staged coordinated attacks in the same area only weeks before, paralysing the capital's center and diplomatic area for 18 hours. The Taliban claimed responsibility for the attacks, but US and Afghan officials blamed the militant Haqqani network.
After a US troop surge that Obama ordered in late 2009, US and NATO forces have managed to weaken Taliban militants, but the movement is far from defeated.
Obama plans to host NATO leaders in Chicago on May 20-21 for a summit to discuss the specifics of the troop withdrawals and look at ways to ensure that Afghanistan does not collapse into civil war when foreign combat forces leave.
The Obama administration is expected to struggle in securing its desired level of contributions for Afghan security forces from its cash-strapped European allies.
Obama said that after his surge troops are withdrawn this fall, "reductions will continue at a steady pace, with more of our troops coming home," suggesting that he would not keep the force at a plateau level of 68,000 for one or two more fighting seasons as some generals might prefer.
The strategic partnership agreement could also help paper over strains in ties between Washington and Kabul, which have been hurt by a number of incidents involving US soldiers that have infuriated public opinion, including the massacre of 17 civilians in Kandahar and the Quran burnings.
Negotiations on the SPA were delayed for months until US negotiators agreed to Karzai's demands to hand over operation of American prisons in the country to Afghan control and give leadership of night raids on homes to Afghan forces.
You can read the full text of President Obama's speech here.
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