In a dramatic, yet sober, Sunday night address to the American people, President Obama announced the capture and killing of Osama bin Laden. He reminded us of the horror, the grief, the tragedy and senseless slaughter of September 11, 2001.

Almost 11 years after the tragic events of 9/11, there is little agreement on defining an effective public diplomacy, and outlining public diplomacy goals, according to the blog Public and Cultural Diplomacy. The failure of the Bush administration’s public diplomacy strategy, followed by the current administration’s intent to restore America’s credibility abroad signal America’s willingness to adopt more collaborative relations with the Muslim world in tackling global challenges.

The diplomatic cable urged US to consider a new raft of anti-Bin Laden propaganda through the Voice of America radio station, interviews with Bin Laden victims, "commissioned articles" in the local press and an anti-Bin Laden website.

Iranian President Mahmoud Ahmadinejad has sent a letter to the pope thanking him for opposing a Florida pastor's threat to burn the Quran and calling for cooperation against secularism, the Vatican and the Iranian presidency said Saturday.

We're back at that old game of winning the hearts and minds of people who want to kill us. Except the problem is becoming a homegrown one. Faisal Shahzad may have had any number of motivations to detonate a bomb in Times Square, but his intent was harming his fellow Americans.

Is it any wonder that U.S. public diplomacy is on life support?

While perhaps the truest measure of our effectiveness around the globe and an essential tool for U.S. national interests long-term, public diplomacy is in deep trouble -- undervalued at home and under siege abroad. From Katrina to Iraq, our communication wounds are deep -- hostage to policies that are viewed as bankrupt in both their rhetoric and application.

Let's face it, America. We're having more than just a bad day.

No, this isn't malaise, but a serious condition brought on by prolonged exposure to really bad news.

Like everything else, it seems to date from Sept. 11, 2001, when we faced the unthinkable on our own shores. We've been reeling ever since, seeking answers and leadership and policies that work. But it's been a bitter harvest.