Trade, the economy and climate change have dominated talks in Beijing between the Chinese and US presidents.It is Barack Obama’s first visit to the country as president and he was given an official welcome in the Great Hall of the People, China’s parliament. Both men stressed the need for strong dialogue as they said they share “extensive common interests.” But China’s leader Hu Jintao also called on the US to end protectionism to properly resolve economic frictions: “We spoke positively of the important role of the China-US strategic and economic dialogue and mechanisms in enhancing the mutual trust and cooperation between the two countries,” said Hu. As the world’s first and third largest economies, their fortunes are entwined, so the issue of global warming also figured highly during the discussions: “There can be no solution to this challenge without the efforts of both China and the United States. As President Hu indicated we are creating a joint clean energy research centre and have achieved agreements on energy efficiency, renewable energy, cleaner uses of coal and electric vehicles,” added Obama. Iran was also an area of agreement with both sides calling on Tehran to show its disputed nuclear programme is peaceful and transparent.