While the wider global environment is worrying we are seeing some positive results in our economic affairs.

Since turning professional at 18 I have travelled the world playing the game that I love and consider myself a global player. As the World No.1 right now I wish to be a positive role model and a sportsperson that people respect and enjoy watching.

Unfortunately the global warming hysteria as I see it is driven by politics more than by science.

For sure the 'Obamania' that's fast taking hold reflects an incredible thirst for change in global politics and dare I say a wave of optimism that things can be different.

I have this pet thing about how global communications are moving so fast now throwing information at you making everything available to you and yet I feel it's leaving us more and more isolated.

One of the gaps in our international development efforts is the provision of global public goods - that is goods or conditions we need that no individual or country can secure on their own such as halting global warming financial stability and peace and security.

In a case like Iraq the UN has again shown what important role it plays as the guarantor for protecting international peace and stability in the global political structure.

Chemistry itself knows altogether too well that - given the real fear that the scarcity of global resources and energy might threaten the unity of mankind - chemistry is in a position to make a contribution towards securing a true peace on earth.

The United Nations remains our most important global actor. These days we are continuously reminded of the enormous responsibility of the Security Council to uphold international peace and stability.

When resources are degraded we start competing for them whether it is at the local level in Kenya where we had tribal clashes over land and water or at the global level where we are fighting over water oil and minerals. So one way to promote peace is to promote sustainable management and equitable distribution of resources.

The Iranian regime suppresses its own people as well as others in the region. It prevents peace by sponsoring terror globally. With the ultimate weapon that it is deceptively developing the regime aims to gain hegemony over the entire Middle East and hold the world's economy hostage.

Men and women who know the brutal reality of war who know that war strips people of their very humanity must unite in a new global partnership for peace.

The need for peace in Northern Ireland goes well beyond political stability. It now speaks to regional Europe and even global stability.

When we think of the major threats to our national security the first to come to mind are nuclear proliferation rogue states and global terrorism. But another kind of threat lurks beyond our shores one from nature not humans - an avian flu pandemic.

It says something about this new global economy that USA Today now reports every morning on the day's events in Asian markets.

People have accused me of being in favor of globalization. This is equivalent to accusing me of being in favor of the sun rising in the morning.

It is a challenge with the global fame to try to act like I put my pants on one leg at a time when in fact I have Pippa Middleton help me put my pants on every morning. She's my lady-in-waiting as well.

Leadership has become a heavy industry. Concern and interest about leadership development is no longer an American phenomenon. It is truly global. Though I will probably be in less demand I wanted to move on.

The war and terrorism in the Middle East the crisis of leadership in many of the oil-supply countries in the developing world the crisis of global warming - all these are very clearly tied to energy.

China and India will take the global leadership on climate change: they are suffering for it.

Central to America's rise to global leadership is our Judeo-Christian tradition with the vision of the goodness and possibilities of every human life.

The increased global linkages promote economic growth in the world through two key mechanisms: the division of labor and the international spillovers of knowledge.

As this body of knowledge has evolved a much more critical job for researchers and scientists has evolved into explaining and educating policy makers and the public to the risks of global warming and the possible consequences of action or of no action.

Most North Americans know that human-caused global warming is real even if political leaders don't always reflect or act on that knowledge.