In the midst of his first overseas trip as U.S. President, Barack Obamais reminding Americans that they live in an interconnected world. His weekly radio andInternet address focuses on the need to work with other countries todeal with economic and security problems.

President Obama films his weekly address aboard Air Force OnePresident Obama's weekly address, recorded on Air Force One, amounted to a postcard from Europe.

But it was a postcard with an important message.

"Inthis new century, we live in a world that has grown smaller and moreinterconnected than at any time in history.  Threats to the nation'ssecurity and economy can no longer be kept at bay by oceans or byborders drawn on maps," he said.

He reminded Americans that theterrorist threat is global, that pollutants from one country can impactclimate around the world, and that abuses by bankers in major financialcenters like New York and London can have a ripple effect through theinternational economy.

"The challenges of our time threaten thepeace and prosperity of every single nation and no one nation can meetthem alone," he said.

US President Barack Obama (l) speaks with British PM Gordon Brown during  G20 Summit in London, 02 Apr 2009 President Obama said that is the reasonwhy he came to Europe.  And he cited the results of the G20 economicsummit in London as an example of what can happen when leaders from theworld come together to tackle a global crisis.

"All of us arenow moving aggressively to get our banks lending again," he said. "Allof us are working to spur growth and create jobs. And all of us haveagreed on the most sweeping reform of our financial regulatoryframework in a generation."

Mr. Obama also reflected on hisone-on-one talks on the sidelines of the London summit with the leadersof China and Russia, and advances being made to build a strong workingrelationship with Beijing and Moscow.  And he referred to his ongoingdiscussions with NATO allies about his new strategy for Afghanistan andPakistan.

"As we have worked this week to find common ground andstrengthen our alliances, we have not solved all of our problems.  Andwe have not agreed on every point or every issue in every meeting.  Butwe have made real and unprecedented progress," he said.

TheRepublican Party response to the president's weekly address dealt withdomestic economics - primarily the fight in Washington over the federalbudget for the 2010 fiscal year.

Speaking for the Republicans,Congressman Paul Ryan of Wisconsin said the president's budget planwill make America's current economic crisis much worse.

"Put simply, the Democrats' budget spends too much, taxes too much, and borrows too much from our kids and their kids," he said.

CongressionalDemocrats pushed a modified version of the president's spending planthrough the House and Senate on Thursday, despite strong Republicanopposition.