(Xinhua)

A one-day summit between the European Union (EU) and the United States ended on Sunday on a high note, with closer transatlantic cooperation promised for the future.

The summit in Prague is "a symbol of a new level reached in EU-U.S. relations," Czech Prime Minister Mirek Topolanek, whose country holds the EU rotating presidency, told reporters after the meeting with U.S. President Barack Obama.

Prague was the last leg of Obama's first European trip since he took office in January.

Before the EU-U.S. summit, Obama had been in London for the G20summit on global financial and economic crisis and in Strasbourg of France for a NATO summit on the 60th anniversary of the military alliance.