President Obama has led America in commemorating the victims of the 9/11 attacks, eight years ago today. He was in Washington, to remember the nearly 3,000 people who died in the attacks on that day. Under rainy skies, the president spoke movingly about the pain America still feels, but said time would not weaken the determination to fight terror in all its forms:“Eight Septembers have come and gone. Nearly 3,000 days have passed, almost one for each of those taken from us. But no turning of the seasons can diminish the pain of the loss of that day. No passage of time and no dark skies can ever dull the meaning of this moment” He went on: “Let us renew our resolve against those who perpetrated those barbaric acts and who plot against us still. In defence of our nation we will never waver; in pursuit of al Qaeda and its extremists allies, we will never falter.” But, as America marks this sad anniversary, there is growing public unease about the war on terror. Opinion polls show waning support for the fighting in Afghanistan, which is threatening to become President Obama’s Vietnam.